.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:///usr/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://www.imagemagick.org/script/compare.php.
.SH DESCRIPTION
Image Settings:
\-alpha option on, activate, off, deactivate, set, opaque, copy
- \ transparent, extract, background, or shape
+ transparent, extract, background, or shape
\-authenticate value decrypt image with this password
- \-channel type apply option to select image channels
+ \-background color background color
\-colorspace type alternate image colorspace
\-compose operator set image composite operator
\-compress type type of pixel compression when writing the image
\-extract geometry extract area from image
\-format "string" output formatted image characteristics
\-fuzz distance colors within this distance are considered equal
+ \-gravity type horizontal and vertical text placement
\-identify identify the format and characteristics of the image
\-interlace type type of image interlacing scheme
\-highlight-color color
de-emphasize pixel differences with this color
\-metric type measure differences between images with this metric
\-monitor monitor progress
+ \-negate replace each pixel with its complementary color
\-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
+ \-read-mask filename associate a read mask with the image
\-regard-warnings pay attention to warning messages
+ \-repage geometry size and location of an image canvas
\-respect-parentheses settings remain in effect until parenthesis boundary
\-sampling-factor geometry
horizontal and vertical sampling factor
\-transparent-color color
transparent color
\-type type image type
+ \-write-mask filename associate a write mask with the image
\-verbose print detailed information about the image
\-virtual-pixel method
virtual pixel access method
+Image Operators:
+ \-brightness-contrast geometry
+ improve brightness / contrast of the image
+ \-distort method args
+ distort images according to given method and args
+ \-level value adjust the level of image contrast
+ \-resize geometry resize the image
+ \-rotate degrees apply Paeth rotation to the image
+ \-sigmoidal-contrast geometry
+ lightness rescaling using sigmoidal contrast enhancement
+ \-trim trim image edges
+
+Image Channel Operators:
+ \-separate separate an image channel into a grayscale image
+
+Image Sequence Operators:
+ \-crop geometry cut out a rectangular region of the image
+ \-write filename write images to this file
+
+Image Stack Operators:
+ \-delete indexes delete the image from the image sequence
+
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/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://www.imagemagick.org/script/license.php\fP