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compare(1)									       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 mathemat-
       ically 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-6.7.8/www/compare.html      or      http://www.imagemag-
       ick.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 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) 1999-2012 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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