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/local/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 \-background color background color
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 \-negate replace each pixel with its complementary color
41 \-profile filename add, delete, or apply an image profile
42 \-quality value JPEG/MIFF/PNG compression level
43 \-quiet suppress all warning messages
44 \-quantize colorspace reduce colors in this colorspace
45 \-read-mask filename associate a read mask with the image
46 \-regard-warnings pay attention to warning messages
47 \-repage geometry size and location of an image canvas
48 \-respect-parentheses settings remain in effect until parenthesis boundary
49 \-sampling-factor geometry
50 horizontal and vertical sampling factor
51 \-seed value seed a new sequence of pseudo-random numbers
52 \-set attribute value set an image attribute
53 \-similarity-threshold value
54 minimum distortion for (sub)image match
55 \-size geometry width and height of image
56 \-subimage-search search for subimage
57 \-synchronize synchronize image to storage device
58 \-taint declare the image as modified
59 \-transparent-color color
61 \-type type image type
62 \-write-mask filename associate a write mask with the image
63 \-verbose print detailed information about the image
64 \-virtual-pixel method
65 virtual pixel access method
68 \-brightness-contrast geometry
69 improve brightness / contrast of the image
71 distort images according to given method and args
72 \-level value adjust the level of image contrast
73 \-resize geometry resize the image
74 \-rotate degrees apply Paeth rotation to the image
75 \-sigmoidal-contrast geometry
76 lightness rescaling using sigmoidal contrast enhancement
77 \-trim trim image edges
79 Image Channel Operators:
80 \-separate separate an image channel into a grayscale image
82 Image Sequence Operators:
83 \-crop geometry cut out a rectangular region of the image
84 \-write filename write images to this file
86 Image Stack Operators:
87 \-delete indexes delete the image from the image sequence
89 Miscellaneous Options:
90 \-channel mask set the image channel mask
91 \-debug events display copious debugging information
92 \-help print program options
93 \-log format format of debugging information
94 \-list type print a list of supported option arguments
95 \-version print version information
97 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.
99 The compare program returns 2 on error otherwise 0 if the images are similar or
100 1 if they are dissimilar.
106 \fBCopyright (C) 1999-2017 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