For more information about the compare command, point your browser to file:///usr/local/share/doc/ImageMagick-7/www/compare.html or http://www.imagemagick.org/script/compare.php.
.SH 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
\-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
\-similarity-threshold value
- minumum distortion for (sub)image match
+ minimum distortion for (sub)image match
\-size geometry width and height of image
\-subimage-search search for subimage
\-synchronize synchronize image to storage device
virtual pixel access method
Miscellaneous Options:
+ \-channel mask set the image channel mask
\-debug events display copious debugging information
\-help print program options
\-log format format of debugging information
\-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.
+
+The compare program returns 2 on error otherwise 0 if the images are similar or
+1 if they are dissimilar.
.SH SEE ALSO
ImageMagick(1)
.SH COPYRIGHT
-\fBCopyright (C) 1999-2013 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///usr/local/share/doc/ImageMagick-7/www/license.html or http://www.imagemagick.org/script/license.php\fP
+\fBCopyright (C) 1999-2015 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///usr/local/share/doc/ImageMagick-7/www/license.html or http://www.imagemagick.org/script/license.php\fP