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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/ImageMagick-6.3.7/www/compare.html             or
       http://www.imagemagick.org/script/compare.php.

DESCRIPTION
       Image Settings:
         -authenticate value  decrypt image with this password
         -channel type        apply option to select image channels
         -colorspace type     alternate image colorspace
         -compress type       type of pixel compression when writing the image
         -define format:option
                              define one or more image format options
         -density geometry    horizontal and vertical density of the image
         -depth value         image depth
         -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
         -limit type value    pixel cache resource limit
         -metric  type          measure  differences  between images with this
       metric
         -monitor             monitor progress
         -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
         -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
         -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  num-
       ber.   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 (i.e. image.ps).  Specify 'file' as '-' for
       standard input or output.

SEE ALSO
       ImageMagick(1)


COPYRIGHT
       Copyright (C) 1999-2008 ImageMagick Studio LLC.  Additional  copyrights
       and       licenses      apply      to      this      software,      see
       file:///usr/share/doc/ImageMagick-6.3.7/www/license.php              or
       http://www.imagemagick.org/script/license.php



ImageMagick                Date: 2005/03/01 01:00:00                compare(1)