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://@DOCUMENTATION_PATH@/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 \-gravity type horizontal and vertical text placement
32 \-identify identify the format and characteristics of the image
33 \-interlace type type of image interlacing scheme
34 \-highlight-color color
35 emphasize pixel differences with this color
36 \-limit type value pixel cache resource limit
37 \-lowlight-color color
38 de-emphasize pixel differences with this color
39 \-metric type measure differences between images with this metric
40 \-monitor monitor progress
41 \-negate replace each pixel with its complementary color
42 \-profile filename add, delete, or apply an image profile
43 \-quality value JPEG/MIFF/PNG compression level
44 \-quiet suppress all warning messages
45 \-quantize colorspace reduce colors in this colorspace
46 \-read-mask filename associate a read mask with the image
47 \-regard-warnings pay attention to warning messages
48 \-repage geometry size and location of an image canvas
49 \-respect-parentheses settings remain in effect until parenthesis boundary
50 \-sampling-factor geometry
51 horizontal and vertical sampling factor
52 \-seed value seed a new sequence of pseudo-random numbers
53 \-set attribute value set an image attribute
54 \-similarity-threshold value
55 minimum distortion for (sub)image match
56 \-size geometry width and height of image
57 \-subimage-search search for subimage
58 \-synchronize synchronize image to storage device
59 \-taint declare the image as modified
60 \-transparent-color color
62 \-type type image type
63 \-write-mask filename associate a write mask with the image
64 \-verbose print detailed information about the image
65 \-virtual-pixel method
66 virtual pixel access method
69 \-brightness-contrast geometry
70 improve brightness / contrast of the image
72 distort images according to given method and args
73 \-level value adjust the level of image contrast
74 \-resize geometry resize the image
75 \-rotate degrees apply Paeth rotation to the image
76 \-sigmoidal-contrast geometry
77 lightness rescaling using sigmoidal contrast enhancement
78 \-trim trim image edges
80 Image Channel Operators:
81 \-separate separate an image channel into a grayscale image
83 Image Sequence Operators:
84 \-crop geometry cut out a rectangular region of the image
85 \-write filename write images to this file
87 Image Stack Operators:
88 \-delete indexes delete the image from the image sequence
90 Miscellaneous Options:
91 \-channel mask set the image channel mask
92 \-debug events display copious debugging information
93 \-help print program options
94 \-log format format of debugging information
95 \-list type print a list of supported option arguments
96 \-version print version information
98 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.
100 The compare program returns 2 on error otherwise 0 if the images are similar or
101 1 if they are dissimilar.
107 \fBCopyright (C) 1999-2018 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file://@DOCUMENTATION_PATH@/www/license.html or http://www.imagemagick.org/script/license.php\fP