1 .TH compare 1 "Date: 2009/01/10 01:00:00" "ImageMagick"
3 compare \- mathematically and visually annotate the difference between an image and its reconstruction.
6 \fBcompare\fP \fIinput-file\fP \fIinput-file\fP [\fIoptions\fP] \fIoutput-file\fP
8 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.
10 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.
13 \-alpha option on, activate, off, deactivate, set, opaque, copy
14 \ transparent, extract, background, or shape
15 \-authenticate value decrypt image with this password
16 \-channel type apply option to select image channels
17 \-colorspace type alternate image colorspace
18 \-compose operator set image composite operator
19 \-compress type type of pixel compression when writing the image
20 \-decipher filename convert cipher pixels to plain pixels
21 \-define format:option
22 define one or more image format options
23 \-density geometry horizontal and vertical density of the image
24 \-depth value image depth
25 \-dissimilarity-threshold value
26 maximum distortion for (sub)image match
27 \-encipher filename convert plain pixels to cipher pixels
28 \-extract geometry extract area from image
29 \-format "string" output formatted image characteristics
30 \-fuzz distance colors within this distance are considered equal
31 \-identify identify the format and characteristics of the image
32 \-interlace type type of image interlacing scheme
33 \-highlight-color color
34 emphasize pixel differences with this color
35 \-limit type value pixel cache resource limit
36 \-lowlight-color color
37 de-emphasize pixel differences with this color
38 \-metric type measure differences between images with this metric
39 \-monitor monitor progress
40 \-profile filename add, delete, or apply an image profile
41 \-quality value JPEG/MIFF/PNG compression level
42 \-quiet suppress all warning messages
43 \-quantize colorspace reduce colors in this colorspace
44 \-regard-warnings pay attention to warning messages
45 \-respect-parentheses settings remain in effect until parenthesis boundary
46 \-sampling-factor geometry
47 horizontal and vertical sampling factor
48 \-seed value seed a new sequence of pseudo-random numbers
49 \-set attribute value set an image attribute
50 \-similarity-threshold value
51 minimum distortion for (sub)image match
52 \-size geometry width and height of image
53 \-subimage-search search for subimage
54 \-synchronize synchronize image to storage device
55 \-taint declare the image as modified
56 \-transparent-color color
58 \-type type image type
59 \-verbose print detailed information about the image
60 \-virtual-pixel method
61 virtual pixel access method
63 Miscellaneous Options:
64 \-debug events display copious debugging information
65 \-help print program options
66 \-log format format of debugging information
67 \-list type print a list of supported option arguments
68 \-version print version information
70 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.
72 The compare program returns 2 on error otherwise 0 if the images are similar or
73 1 if they are dissimilar.
79 \fBCopyright (C) 1999-2014 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