.SH OVERVIEW
The \fBcompare\fP 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:///ImageMagick-7.0.7/share/doc/ImageMagick-7/www/compare.html or http://www.imagemagick.org/script/compare.php.
+For more information about the compare command, point your browser to file:///usr/local/share/doc/ImageMagick-7/www/compare.html or http://imagemagick.org/script/compare.php.
.SH DESCRIPTION
Image Settings:
\-alpha option on, activate, off, deactivate, set, opaque, copy
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.
+Two images are considered similar if their difference according to the specified metric and fuzz value is 0, with the exception of the normalized cross correlation metric (NCC), where two images are considered similar when their normalized cross correlation is 1. The default metric is NCC.
+
+The compare program returns 2 on error, 0 if the images are similar, or a value between 0 and 1 if they are not similar.
.SH SEE ALSO
ImageMagick(1)
.SH COPYRIGHT
-\fBCopyright (C) 1999-2018 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///ImageMagick-7.0.7/share/doc/ImageMagick-7/www/license.html or http://www.imagemagick.org/script/license.php\fP
+\fBCopyright (C) 1999-2018 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///usr/local/share/doc/ImageMagick-7/www/license.html or http://imagemagick.org/script/license.php\fP
projects / imagemagick / blobdiff