1compare(1) General Commands Manual compare(1)
2
6 compare - mathematically and visually annotate the difference between
7 an image and its reconstruction.
8
10 compare input-file input-file [options] output-file
11
13 The compare program is a member of the ImageMagick(1) suite of tools.
14 Use it to mathematically and visually annotate the difference between
15 an image and its reconstruction.
16 For more information about the compare command, point your browser to
18 file:///usr/share/doc/ImageMagick-6.7.8/www/compare.html or
19 http://www.imagemagick.org/script/compare.php.
20
22 Image Settings:
23 -alpha option on, activate, off, deactivate, set, opaque, copy
24 transparent, extract, background, or shape
25 -authenticate value decrypt image with this password
26 -channel type apply option to select image channels
27 -colorspace type alternate image colorspace
28 -compose operator set image composite operator
29 -compress type type of pixel compression when writing the image
30 -decipher filename convert cipher pixels to plain pixels
31 -define format:option
32 define one or more image format options
33 -density geometry horizontal and vertical density of the image
34 -depth value image depth
35 -dissimilarity-threshold value
36 maximum distortion for (sub)image match
37 -encipher filename convert plain pixels to cipher pixels
38 -extract geometry extract area from image
39 -format "string" output formatted image characteristics
40 -fuzz distance colors within this distance are considered equal
41 -identify identify the format and characteristics of the
42 image
43 -interlace type type of image interlacing scheme
44 -highlight-color color
45 emphasize pixel differences with this color
46 -limit type value pixel cache resource limit
47 -lowlight-color color
48 de-emphasize pixel differences with this color
49 -metric type measure differences between images with this
50 metric
51 -monitor monitor progress
52 -passphrase filename get the passphrase from this file
53 -profile filename add, delete, or apply an image profile
54 -quality value JPEG/MIFF/PNG compression level
55 -quiet suppress all warning messages
56 -quantize colorspace reduce colors in this colorspace
57 -regard-warnings pay attention to warning messages
58 -respect-parentheses settings remain in effect until parenthesis
59 boundary
60 -sampling-factor geometry
61 horizontal and vertical sampling factor
62 -seed value seed a new sequence of pseudo-random numbers
63 -set attribute value set an image attribute
64 -size geometry width and height of image
65 -subimage-search search for subimage
66 -synchronize synchronize image to storage device
67 -taint declare the image as modified
68 -transparent-color color
69 transparent color
70 -type type image type
71 -verbose print detailed information about the image
72 -virtual-pixel method
73 virtual pixel access method
74 Miscellaneous Options:
76 -debug events display copious debugging information
77 -help print program options
78 -log format format of debugging information
79 -list type print a list of supported option arguments
80 -version print version information
81 By default, the image format of `file' is determined by its magic num‐
83 ber. To specify a particular image format, precede the filename with
84 an image format name and a colon (i.e. ps:image) or specify the image
85 type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for
86 standard input or output.
87
89 ImageMagick(1)
90
93 Copyright (C) 1999-2012 ImageMagick Studio LLC. Additional copyrights
94 and licenses apply to this software, see
95 file:///usr/share/doc/ImageMagick-6.7.8/www/license.html or
96 http://www.imagemagick.org/script/license.php
97ImageMagick Date: 2009/01/10 01:00:00 compare(1)