composite – linux man page
August 26th, 2009
| Tags: animate, composite, conjure, convert, display, identify, import, mogrify, montage
composite – composite images together.
USAGE
composite [ options ... ] change-image base-image [ mask-image ] out-
put-image
DESCRIPTION
composite composites (combines) images to create new images. base-
image is the base image and change-image contains the changes. ouput-
image is the result, and normally has the same dimensions as base-
image.
The optional mask-image can be used to provide opacity information for
change-image when it has none or if you want a different mask. A mask
image is typically grayscale and the same size as base-image. If mask-
image is not grayscale, it is converted to grayscale and the resulting
intensities are used as opacity information.
EXAMPLES
To composite an image of a cockatoo with a perch, use:
composite cockatoo.miff perch.ras composite.miff
To compute the difference between images in a series, use:
composite -compose difference series.2 series.1
difference.miff
To composite an image of a cockatoo with a perch starting at location
(100,150), use:
composite -geometry +100+150 cockatoo.miff
perch.ras composite.miff
To tile a logo across your image of a cockatoo, use
convert +shade 30x60 cockatoo.miff mask.miff
composite -compose bumpmap -tile logo.png
cockatoo.miff mask.miff composite.miff
To composite a red, green, and blue color plane into a single composite
image, try
composite -compose CopyGreen green.png red.png
red-green.png
composite -compose CopyBlue blue.png red-green.png
composite.png
OPTIONS
Options are processed in command line order. Any option you specify on
the command line remains in effect only for the image that follows.
All options are reset to their default values after each image is read.
For a more detailed description of each option, see Options, above.
ImageMagick(1).
-authenticate
decrypt image with this password
-background
the background color
-blue-primary ,
blue chromaticity primary point
-cache
(This option has been replaced by the -limit option)
-colors
preferred number of colors in the image
-colorspace
the type of colorspace
-comment
annotate an image with a comment
-compose
the type of image composition
-compress
the type of image compression
-debug
enable debug printout
-define {=},...
add coder/decoder specific options
-density x
horizontal and vertical resolution in pixels of the image
-depth
depth of the image
-displace x
shift image pixels as defined by a displacement map
-display
specifies the X server to contact
-dispose
GIF disposal method
-dissolve
dissolve an image into another by the given percent
-dither
apply Floyd/Steinberg error diffusion to the image
-encoding
specify the text encoding
-endian
specify endianness (MSB or LSB) of the image
-filter
use this type of filter when resizing an image
-font
use this font when annotating the image with text
-geometry x{+-}{+-}{%}{@} {!}{<}{>}
preferred size and location of the Image window.
-gravity
direction primitive gravitates to when annotating the image.
-green-primary ,
green chromaticity primary point
-help print usage instructions
-interlace
the type of interlacing scheme
-label
assign a label to an image
-limit
Area, Disk, File, Map, or Memory resource limit
-log
Specify format for debug log
-matte store matte channel if the image has one
-monochrome
transform the image to black and white
-negate
replace every pixel with its complementary color
-page x{+-}{+-}{%}{!}{<}{>}
size and location of an image canvas
-profile
add ICM, IPTC, or generic profile to image
-quality
JPEG/MIFF/PNG compression level
-red-primary ,
red chromaticity primary point
-render
render vector operations
-repage x{+-}{+-}{%}{!}{<}{>}
size and location of an image canvas. This option is like -page
but act as an image operator rather than a setting.
-resize x{%}{@}{!}{<}{>}
resize an image
-rotate {<}{>}
apply Paeth image rotation to the image
-sampling-factor x
sampling factors used by JPEG or MPEG-2 encoder and YUV
decoder/encoder.
-scene
set scene number
-sharpen {x}
sharpen the image
-size x{+offset}
width and height of the image
-stegano
hide watermark within an image
-stereo
composite two images to create a stereo anaglyph
-strip strip the image of any profiles or comments
-thumbnail x{%}{@}{!}{<}{>}
create a thumbnail of the image
-treedepth
tree depth for the color reduction algorithm
-trim trim an image
-type
the image type
-units
the units of image resolution
-unsharp {x}{+}{+}
sharpen the image with an unsharp mask operator
-verbose
print detailed information about the image
-version
print ImageMagick version string
-watermark
percent brightness of a watermark
-white-point ,
chromaticity white point
-write
write an image sequence [convert, composite]
For a more detailed description of each option, see Options,
above. ImageMagick(1).
ENVIRONMENT
COLUMNS
Output screen width. Used when formatting text for the screen.
Many Unix systems keep this shell variable up to date, but it
may need to be explicitly exported in order for ImageMagick to
see it.
DISPLAY
X11 display ID (host, display number, and screen in the form
hostname:display.screen).
HOME Location of user’s home directory. ImageMagick searches for con-
figuration files in $HOME/.magick if the directory exists. See
MAGICK_CODER_MODULE_PATH, MAGICK_CONFIGURE_PATH, and MAGICK_FIL-
TER_MODULE_PATH if more flexibility is needed.
MAGICK_CODER_MODULE_PATH
Search path to use when searching for image format coder mod-
ules. This path allows the user to arbitrarily extend the image
formats supported by ImageMagick by adding loadable modules to
an arbitrary location rather than copying them into the
ImageMagick installation directory. The formatting of the search
path is similar to operating system search paths (i.e. colon
delimited for Unix, and semi-colon delimited for Microsoft Win-
dows). This user specified search path is used before trying the
default search path.
MAGICK_CONFIGURE_PATH
Search path to use when searching for configuration (.mgk)
files. The formatting of the search path is similar to operat-
ing system search paths (i.e. colon delimited for Unix, and
semi-colon delimited for Microsoft Windows). This user specified
search path is used before trying the default search path.
MAGICK_DEBUG
Debug options (see -debug for details)
MAGICK_FILTER_MODULE_PATH
Search path to use when searching for filter process modules
(invoked via -process). This path allows the user to arbitrarily
extend ImageMagick’s image processing functionality by adding
loadable modules to an arbitrary location rather than copying
them into the ImageMagick installation directory. The formatting
of the search path is similar to operating system search paths
(i.e. colon delimited for Unix, and semi-colon delimited for
Microsoft Windows). This user specified search path is used
before trying the default search path.
MAGICK_FONT_PATH
Directory where ImageMagick should look for TrueType and
Postscript Type1 font files if the font file is not found in the
current directory. It is preferred to define the available fonts
via type.mgk rather than use MAGICK_FONT_PATH.
MAGICK_HOME
Path to top of ImageMagick installation directory. Only observed
by "uninstalled" builds of ImageMagick which do not have their
location hard-coded or set by an installer.
MAGICK_DISK_LIMIT
Maximum amount of disk space allowed for use by the pixel cache.
MAGICK_FILES_LIMIT
Maximum number of open files.
MAGICK_MAP_LIMIT
Maximum size of a memory map.
MAGICK_MEMORY_LIMIT
Maximum amount of memory to allocate from the heap.
MAGICK_TMPDIR
Path to directory where ImageMagick should write temporary
files. The default is to use the system default, or the location
set by TMPDIR.
TMPDIR For POSIX-compatible systems (Unix-compatible), the path to the
directory where all applications should write temporary files.
Overridden by MAGICK_TMPDIR if it is set.
TMP or TEMP
For Microsoft Windows, the path to the directory where applica-
tions should write temporary files. Overridden by MAGICK_TMPDIR
if it is set.
CONFIGURATION FILES
ImageMagick uses a number of XML format configuration files:
colors.mgk
colors configuration file
delegates.mgk
delegates configuration file
log.mgk
logging configuration file
magic.mgk
file header magic test configuration file
modules.mgk
loadable modules configuration file
type.mgk
master type (fonts) configuration file
SEE ALSO
animate(1), display(1), conjure(1), convert(1), identify(1),
import(1), mogrify(1), montage(1)
COPYRIGHT
Copyright (C) 1999-2004 ImageMagick Studio LLC. Additional copyrights
and licenses apply to this software, see http://www.imagemag-
ick.org/www/Copyright.html
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