NAME
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gm - GraphicsMagick command-line utilities to create, edit, or convert images
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Synopsis
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gm animate [ options ... ] file [ [
options ... ] file ... ]
gm composite [ options ... ] change-image base-image
[ mask-image ] output-image
gm conjure [ options ] script.msl
[ [ options ] script.msl ]
gm convert [ [ options ... ] [ input-file ...
] ... [ output-file ] ]
gm display [ options ... ] file ...
[ [options ... ]file ... ]
gm identify file [ file ... ]
gm import [ options ... ] file
gm mogrify [ options ... ] file ...
gm montage [ options ... ] file [ [
options ... ] file ... ] output-file
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Description
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GraphicsMagick's gm provides a suite of command-line
utilities for creating, converting, editing, and displaying
images:
Gm display
is a machine architecture independent
image processing and display facility. It can display an image on any workstation
display running an X server.
Gm import
reads an image from any visible window
on an X server and outputs it as an image file. You can capture
a single window, the entire screen, or any rectangular portion of the screen.
Gm montage
creates a composite by combining several
separate images. The images are tiled on the composite image with the name
of the image optionally appearing just below the individual tile.
Gm convert
converts an input file using one image
format to an output file with the same or differing image format while applying
an arbitrary number of image transformations.
Gm mogrify
transforms an image or a sequence of
images. These transforms include image scaling, image rotation,
color
reduction, and others. The transmogrified image
overwrites the
original image.
Gm identify
describes the format and characteristics
of one or more image files. It will also report if an image is incomplete
or corrupt.
Gm composite
composites images (blends or merges images together) to create new images.
Gm conjure
interprets and executes scripts in
the Magick Scripting Language (MSL).
The GraphicsMagick utilities recognize the following image formats:
| Name | Mode | Description |
 8BIM | *rw- | Photoshop resource format |
| AFM | *r-- | TrueType font |
| APP1 | *rw- | Photoshop resource format |
| ART | *r-- | PF1: 1st Publisher |
| AVI | *r-- | Audio/Visual Interleaved |
| AVS | *rw+ | AVS X image |
| BIE | *rw- | Joint Bi-level Image experts Group |
| | | interchange format |
| BMP | *rw+ | Microsoft Windows bitmap image |
| CAPTION | *r+ | Caption (requires separate size info) |
| CMYK | *rw- | Raw cyan, magenta, yellow, and black |
| | | samples (8 or 16 bits, depending on |
| | | the image depth) |
| CMYKA | *rw- | Raw cyan, magenta, yellow, black, and |
| | | matte samples (8 or 16 bits, depending |
| | | on the image depth) |
| CUT | *r-- | DR Halo |
| DCM | *r-- | Digital Imaging and Communications in |
| | | Medicine image |
| DCX | *rw+ | ZSoft IBM PC multi-page Paintbrush |
| DIB | *rw+ | Microsoft Windows bitmap image |
| DPS | *r-- | Display PostScript |
| DPX | *r-- | Digital Moving Picture Exchange |
| EPDF | *rw- | Encapsulated Portable Document Format |
| EPI | *rw- | Adobe Encapsulated PostScript |
| | | Interchange format |
| EPS | *rw- | Adobe Encapsulated PostScript |
| EPS2 | *-w- | Adobe Level II Encapsulated PostScript |
| EPS3 | *-w- | Adobe Level III Encapsulated PostScript |
| EPSF | *rw- | Adobe Encapsulated PostScript |
| EPSI | *rw- | Adobe Encapsulated PostScript |
| | | Interchange format |
| EPT | *rw- | Adobe Encapsulated PostScript with TIFF |
| | | preview |
| FAX | *rw+ | Group 3 FAX |
| FILE | *r-- | Uniform Resource Locator |
| FITS | *rw- | Flexible Image Transport System |
| FPX | *rw- | FlashPix Format |
| FTP | *r-- | Uniform Resource Locator |
| G3 | *rw- | Group 3 FAX |
| GIF | *rw+ | CompuServe graphics interchange format |
| GIF87 | *rw- | CompuServe graphics interchange format |
| | | (version 87a) |
| GRADIENT | *r-- | Gradual passing from one shade to |
| | | another |
| GRANITE | *r-- | Granite texture |
| GRAY | *rw+ | Raw gray samples (8 or 16 bits, |
| | | depending on the image depth) |
| H | *rw- | Internal format |
| HDF | -rw+ | Hierarchical Data Format |
| HISTOGRAM | *-w- | Histogram of the image |
| HTM | *-w- | Hypertext Markup Language and a |
| | | client-side image map |
| HTML | *-w- | Hypertext Markup Language and a |
| | | client-side image map |
| HTTP | *r-- | Uniform Resource Locator |
| ICB | *rw+ | Truevision Targa image |
| ICM | *rw- | ICC Color Profile |
| ICO | *r-- | Microsoft icon |
| ICON | *r-- | Microsoft icon |
| IPTC | *rw- | IPTC Newsphoto |
| JBG | *rw+ | Joint Bi-level Image experts Group |
| | | interchange format |
| JBIG | *rw+ | Joint Bi-level Image experts Group |
| | | interchange format |
| JP2 | *rw- | JPEG-2000 JP2 File Format Syntax |
| JPC | *rw- | JPEG-2000 Code Stream Syntax |
| JPEG | *rw- | Joint Photographic Experts Group |
| | | JFIF format |
| JPG | *rw- | Joint Photographic Experts Group |
| | | JFIF format |
| LABEL | *r-- | Text image format |
| LOGO | *rw- | GraphicsMagick Logo |
| M2V | *rw+ | MPEG-2 Video Stream |
| MAP | *rw- | Colormap intensities (8 or 16 bits, |
| | | depending on the image depth) and |
| | | indices (8 or 16 bits, depending |
| | | on whether colors exceeds 256). |
| MAT | *-w+ | MATLAB image format |
| MATTE | *-w+ | MATTE format |
| MIFF | *rw+ | Magick image format |
| MNG | *rw+ | Multiple-image Network Graphics |
| MONO | *rw- | Bi-level bitmap in least-significant- |
| | | -byte-first order |
| MPC | -rw- | Magick Persistent Cache image format |
| MPEG | *rw+ | MPEG-1 Video Stream |
| MPG | *rw+ | MPEG-1 Video Stream |
| MPR | *r-- | Magick Persistent Registry |
| MSL | *r-- | Magick Scripting Language |
| MTV | *rw+ | MTV Raytracing image format |
| MVG | *rw- | Magick Vector Graphics |
| NETSCAPE | *r-- | Netscape 216 color cube |
| NULL | *r-- | Constant image of uniform color |
| OTB | *rw- | On-the-air bitmap |
| P7 | *rw+ | Xv thumbnail format |
| PAL | *rw- | 16bit/pixel interleaved YUV |
| PALM | *rw- | Palm Pixmap format |
| PBM | *rw+ | Portable bitmap format (black and white) |
| PCD | *rw- | Photo CD |
| PCDS | *rw- | Photo CD |
| PCL | *-w- | Page Control Language |
| PCT | *rw- | Apple Macintosh QuickDraw/PICT |
| PCX | *rw- | ZSoft IBM PC Paintbrush |
| PDB | *r-- | Pilot Image Format |
| PDF | *rw+ | Portable Document Format |
| PFA | *r-- | TrueType font |
| PFB | *r-- | TrueType font |
| PFM | *r-- | TrueType font |
| PGM | *rw+ | Portable graymap format (gray scale) |
| PICON | *rw- | Personal Icon |
| PICT | *rw- | Apple Macintosh QuickDraw/PICT |
| PIX | *r-- | Alias/Wavefront RLE image format |
| PLASMA | *r-- | Plasma fractal image |
| PM | *rw- | X Windows system pixmap (color) |
| PNG | *rw- | Portable Network Graphics |
| PNM | *rw+ | Portable anymap |
| PPM | *rw+ | Portable pixmap format (color) |
| PREVIEW | *-w- | Show a preview an image enhancement, |
| | | effect, or f/x |
| PS | *rw+ | Adobe PostScript |
| PS2 | *-w+ | Adobe Level II PostScript |
| PS3 | *-w+ | Adobe Level III PostScript |
| PSD | *rw- | Adobe Photoshop bitmap |
| PTIF | *rw- | Pyramid encoded TIFF |
| PWP | *r-- | Seattle Film Works |
| RAS | *rw+ | SUN Rasterfile |
| RGB | *rw+ | Raw red, green, and blue samples (8 or |
| | | 16 bits, depending on the image depth) |
| RGBA | *rw+ | Raw red, green, blue, and matte samples |
| | | (8 or 16 bits, depending on the image |
| | | depth) |
| RLA | *r-- | Alias/Wavefront image |
| RLE | *r-- | Utah Run length encoded image |
| ROSE | *rw- | 70x46 Truecolor test image |
| SCT | *r-- | Scitex HandShake |
| SFW | *r-- | Seattle Film Works |
| SGI | *rw+ | Irix RGB image |
| SHTML | *-w- | Hypertext Markup Language and a |
| | | client-side image map |
| STEGANO | *r-- | Steganographic image |
| SUN | *rw+ | SUN Rasterfile |
| SVG | *rw+ | Scalable Vector Gaphics |
| TEXT | *rw+ | Raw text |
| TGA | *rw+ | Truevision Targa image |
| TIF | *rw+ | Tagged Image File Format |
| TIFF | *rw+ | Tagged Image File Format |
| TILE | *r-- | Tile image with a texture |
| TIM | *r-- | PSX TIM |
| TTF | *r-- | TrueType font |
| TXT | *rw+ | Raw text |
| UIL | *-w- | X-Motif UIL table |
| UYVY | *rw- | 16bit/pixel interleaved YUV |
| VDA | *rw+ | Truevision Targa image |
| VICAR | *rw- | VICAR rasterfile format |
| VID | *rw+ | Visual Image Directory |
| VIFF | *rw+ | Khoros Visualization image |
| VST | *rw+ | Truevision Targa image |
| WBMP | *rw- | Wireless Bitmap (level 0) image |
| WMF | *r-- | Windows Metafile |
| WPG | *r-- | Word Perfect Graphics |
| X | *rw- | X Image |
| XBM | *rw- | X Windows system bitmap (black |
| | | and white) |
| XC | *r-- | Constant image uniform color |
| XCF | *r-- | GIMP image |
| XML | *r-- | Scalable Vector Gaphics |
| XPM | *rw- | X Windows system pixmap (color) |
| XV | *rw+ | Khoros Visualization image |
| XWD | *rw- | X Windows system window dump (color) |
| YUV | *rw- | CCIR 601 4:1:1 |
| | | |
| Modes: | | |
| | * | Native blob support |
| | r | Read |
| | w | Write |
| | + | Multi-image |
Support for some of these formats require additional programs or libraries.
README
tells where to find this software.
Note, a format delineated with + means that if more than one
image is specified, it is composited into a single multi-image file. Use
+adjoin
if you want a single image produced for each frame.
Your installation might not support all of the formats in the list. To get
an up-to-date listing of the formats supported by your particular
configuration, run "convert -list format".
Raw images are expected to have one byte per pixel unless gm
is compiled in 16-bit mode or in 32-bit mode. Here, the raw data
is expected to be stored two or four
bytes per pixel, respectively, in most-significant-byte-first order.
You can tell if gm was compiled in 16-bit mode by typing
"gm version" without any options, and looking for "Q:16" in the first line of
output.
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Files and Formats
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By default, the image format is determined by its magic number, i.e., the
first few bytes of the file. To specify
a particular image format, precede the filename with an image format name
and a colon (i.e.ps:image) or specify the image type as the
filename suffix.
The magic number takes precedence over the filename suffix
and the prefix takes precedence over the magic number and the suffix
in input files.
The prefix takes precedence over the filename
suffix in output files. To read the "built-in" formats (GRANITE, H, LOGO,
NETSCAPE, PLASMA, and ROSE) use a prefix (including the colon) without a
filename or suffix. To read the XC format, follow the colon with a color
specification. To read the CAPTION format, follow the colon with a text
string or with a filename prefixed with the at symbol (@).
When you specify X as your image type, the filename has special
meaning. It specifies an X window by id, name, or
root. If
no filename is specified, the window is selected by clicking the mouse
in the desired window.
Specify input_file as - for standard input,
output_file as - for standard output.
If input_file has the extension .Z or .gz, the
file is uncompressed with uncompress or gunzip
respectively.
If output_file has the extension .Z or .gz,
the file is compressed using with compress or gzip respectively.
Finally, when running on platforms that allow it, precede the image file name
with | to pipe to or from a system command (this feature is not
available on VMS, Win32 and Macintosh platforms). Use a backslash or
quotation marks to prevent your shell from interpreting the |.
Use an optional index enclosed in brackets after an input file name to specify
a desired subimage of a multi-resolution image format like Photo CD
(e.g. "img0001.pcd[4]") or a range for MPEG images
(e.g. "video.mpg[50-75]"). A subimage
specification can be disjoint (e.g. "image.tiff[2,7,4]"). For
raw images, specify a subimage with a geometry
(e.g. -size 640x512 "image.rgb[320x256+50+50]").
Surround the image name with quotation marks to prevent your shell
from interpreting the square brackets.
Single images are written with the filename you specify. However, multi-part
images (e.g., a multi-page PostScript document with +adjoin specified)
are written
with the filename followed by a period (.) and the scene number. You
can change this behavior by embedding a %d, %0Nd, %o, %0No, %x,
or %0Nx printf
format specification in the file name. For example,
image%02d.miff
writes files image00.miff, image01.miff, etc.
When running a commandline utility, you can
prepend an at sign @ to a filename to read a list of image
filenames from that file. This is convenient in the event you have too
many image filenames to fit on the command line.
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Back to Contents
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Options
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Options are processed in command line order. Any option you specify on
the command line remains in effect for the set of images that follows,
until the set is terminated by the appearance of any option or -noop.
Some options only affect the decoding of images and others only the encoding.
The latter can appear after the final group of input images.
This is a combined list of the commandline options used by the GraphicsMagick
utilities (animate, composite, convert, display, identify,
import, mogrify and montage).
In this document, angle brackets ("<>") enclose variables and curly
brackets ("{}") enclose optional parameters. For example,
"-fuzz <distance>{%}" means you can use the
option "-fuzz 10"
or "-fuzz 2%".
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-adjoin
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| join images into a single multi-image file |
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By default, all images of an image sequence are stored in the same
file. However, some formats (e.g. JPEG) do not support more than one image
and are saved to separate files. Use +adjoin to force this
behavior. |
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-affine <matrix>
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This option provides a transform matrix {sx,rx,ry,sy,tx,ty} for
use by subsequent -draw or -transform options. |
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-antialias
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By default antialiasing algorithms are used when drawing objects (e.g. lines)
or rendering vector formats (e.g. WMF and Postscript). Use +antialias to
disable use of antialiasing algorithms. Reasons to disable antialiasing
include avoiding increasing colors in the image, or improving rendering speed. |
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-append
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This option creates a single image where the images in the original set
are stacked top-to-bottom. If they are not of the same width,
any narrow images will be expanded to fit using the background color.
Use +append to stack images left-to-right. The set of images
is terminated by the appearance of any option.
If the -append
option appears after all of the input images, all images are appended. |
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-authenticate <string>
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| decrypt image with this password |
|
Use this option to supply a password for decrypting an image or an
image sequence, if it is being read from a format such as PDF that supports
encryption. Encrypting images being written is not supported. |
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-average
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|
The set of images
is terminated by the appearance of any option.
If the -average
option appears after all of the input images, all images are averaged. |
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-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
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-background <color>
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|
The color is specified using the format described under the -fill
option. |
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-blue-primary <x>,<y>
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| blue chromaticity primary point |
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-blur <radius>{x<sigma>}
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| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
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-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
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-bordercolor <color>
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|
The color is specified using the format described under the -fill
option. |
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-borderwidth <geometry>
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-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
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See -draw for further
details. |
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-cache <threshold>
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| (This option has been replaced by the -limit option) |
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-channel <type>
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Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
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| simulate a charcoal drawing |
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-chop <width>x<height>{+-}<x>{+-}<y>{%}
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| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
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-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| blue chromaticity primary point |
|
-blur <radius>{x<sigma>}
|
| blur the image with a Gaussian operator |
|
Blur with the given radius and
standard deviation (sigma). |
|
-border <width>x<height>
|
| surround the image with a border of color |
|
See -geometry for details
about the geometry specification. |
|
-bordercolor <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-borderwidth <geometry>
|
|
-box <color>
|
| set the color of the annotation bounding box |
|
The color is specified using the format described under the -fill
option. |
|
See -draw for further
details. |
|
-cache <threshold>
|
| (This option has been replaced by the -limit option) |
|
-channel <type>
|
|
Choose from: Red, Green, Blue, Opacity,
Matte, Cyan, Magenta, Yellow, or Black. |
|
Use this option to extract a particular channel from the image.
Matte,
for example, is useful for extracting the opacity values from an image. |
|
-charcoal <factor>
|
| simulate a charcoal drawing |
|
-chop <width>x<height>{+-}<x>{+-}<y>{%}
|
| remove pixels from the interior of an image |
|
Width and height give the number of columns and rows to remove,
and x and y are offsets that give the location of the
leftmost column and topmost row to remove. |
|
The x offset normally specifies the leftmost column to remove.
If the -gravity option is present with NorthEast, East,
or SouthEast
gravity, it gives the distance leftward from the right edge
of the image to the rightmost column to remove. Similarly, the y offset
normally specifies the topmost row to remove, but if
the -gravity option is present with SouthWest, South,
or SouthEast
gravity, it specifies the distance upward from the bottom edge of the
image to the bottom row to remove. |
|
The -chop option removes entire rows and columns,
and moves the remaining corner blocks leftward and upward to close the gaps. |
|
-clip
|
| apply the clipping path, if one is present |
|
If a clipping path is present, it will be applied to subsequent operations. |
|
For example, if you type the following command: |
gm convert -clip -negate cockatoo.tif negated.tif
|
only the pixels within the clipping path are negated. |
|
The -clip feature requires the XML library. If the XML library
is not present, the option is ignored. |
|
-coalesce
|
| merge a sequence of images |
|
Each image N in the sequence after Image 0 is replaced with the image
created by flattening images 0 through N. |
|
The set of images
is terminated by the appearance of any option.
If the -coalesce
option appears after all of the input images, all images are coalesced. |
|
-colorize <value>
|
| colorize the image with the pen color |
|
Specify the amount of colorization as a percentage. You can apply separate
colorization values to the red, green, and blue channels of the image with
a colorization value list delimited with slashes (e.g. 0/0/50). |
|
-colormap <type>
|
|
Choose between shared or private. |
|
This option only applies when the default X server visual is PseudoColor
or GRAYScale. Refer to -visual for more details. By default,
a shared colormap is allocated. The image shares colors with other X clients.
Some image colors could be approximated, therefore your image may look
very different than intended. Choose Private and the image colors
appear exactly as they are defined. However, other clients may
go technicolor when the image colormap is installed. |
|
-colors <value>
|
| preferred number of colors in the image |
|
The actual number of colors in the image may be less than your request,
but never more. Note, this is a color reduction option. Images with less
unique colors than specified with this option will have r>
|
|
-backdrop
|
| display the image centered on a backdrop. |
|
This backdrop covers the entire workstation screen and is useful for hiding
other X window activity while viewing the image. The color of the backdrop
is specified as the foreground color (X11 default is black). |
| Refer to
"X Resources", below,
for details. |
|
-background <color>
|
|
The color is specified using the format described under the -fill
option. |
|
-blue-primary <x>,<y>
|
| |