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CentOS 7.0 - man page for compare (centos section 1)

compare(1)				       General Commands Manual					   compare(1)

NAME
compare - mathematically and visually annotate the difference between an image and its reconstruction.
SYNOPSIS
compare input-file input-file [options] output-file
OVERVIEW
The compare program is a member of the ImageMagick(1) suite of tools. Use it to mathematically and visually annotate the difference between an image and its reconstruction. For more information about the compare command, point your browser to file:///usr/share/doc/ImageMag- ick-6.7.8/www/compare.html or http://www.imagemagick.org/script/compare.php.
DESCRIPTION
Image Settings: -alpha option on, activate, off, deactivate, set, opaque, copy transparent, extract, background, or shape -authenticate value decrypt image with this password -channel type apply option to select image channels -colorspace type alternate image colorspace -compose operator set image composite operator -compress type type of pixel compression when writing the image -decipher filename convert cipher pixels to plain pixels -define format:option define one or more image format options -density geometry horizontal and vertical density of the image -depth value image depth -dissimilarity-threshold value maximum distortion for (sub)image match -encipher filename convert plain pixels to cipher pixels -extract geometry extract area from image -format "string" output formatted image characteristics -fuzz distance colors within this distance are considered equal -identify identify the format and characteristics of the image -interlace type type of image interlacing scheme -highlight-color color emphasize pixel differences with this color -limit type value pixel cache resource limit -lowlight-color color de-emphasize pixel differences with this color -metric type measure differences between images with this metric -monitor monitor progress -passphrase filename get the passphrase from this file -profile filename add, delete, or apply an image profile -quality value JPEG/MIFF/PNG compression level -quiet suppress all warning messages -quantize colorspace reduce colors in this colorspace -regard-warnings pay attention to warning messages -respect-parentheses settings remain in effect until parenthesis boundary -sampling-factor geometry horizontal and vertical sampling factor -seed value seed a new sequence of pseudo-random numbers -set attribute value set an image attribute -size geometry width and height of image -subimage-search search for subimage -synchronize synchronize image to storage device -taint declare the image as modified -transparent-color color transparent color -type type image type -verbose print detailed information about the image -virtual-pixel method virtual pixel access method Miscellaneous Options: -debug events display copious debugging information -help print program options -log format format of debugging information -list type print a list of supported option arguments -version print version information By default, the image format of `file' is determined by its magic number. To specify a particular image for- mat, precede the filename with an image format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for standard input or output.
SEE ALSO
ImageMagick(1)
COPYRIGHT
Copyright (C) 1999-2012 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///usr/share/doc/ImageMagick-6.7.8/www/license.html or http://www.imagemagick.org/script/license.php ImageMagick Date: 2009/01/10 01:00:00 compare(1)


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