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 \-colorspace type alternate image colorspace
17 \-compose operator set image composite operator
18 \-compress type type of pixel compression when writing the image
19 \-decipher filename convert cipher pixels to plain pixels
20 \-define format:option
21 define one or more image format options
22 \-density geometry horizontal and vertical density of the image
23 \-depth value image depth
24 \-dissimilarity-threshold value
25 maximum distortion for (sub)image match
26 \-encipher filename convert plain pixels to cipher pixels
27 \-extract geometry extract area from image
28 \-format "string" output formatted image characteristics
29 \-fuzz distance colors within this distance are considered equal
30 \-identify identify the format and characteristics of the image
31 \-interlace type type of image interlacing scheme
32 \-highlight-color color
33 emphasize pixel differences with this color
34 \-limit type value pixel cache resource limit
35 \-lowlight-color color
36 de-emphasize pixel differences with this color
37 \-metric type measure differences between images with this metric
38 \-monitor monitor progress
39 \-negate replace each pixel with its complementary color
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 \-read-mask filename associate a read mask with the image
45 \-regard-warnings pay attention to warning messages
46 \-respect-parentheses settings remain in effect until parenthesis boundary
47 \-sampling-factor geometry
48 horizontal and vertical sampling factor
49 \-seed value seed a new sequence of pseudo-random numbers
50 \-set attribute value set an image attribute
51 \-similarity-threshold value
52 minimum distortion for (sub)image match
53 \-size geometry width and height of image
54 \-subimage-search search for subimage
55 \-synchronize synchronize image to storage device
56 \-taint declare the image as modified
57 \-transparent-color color
59 \-type type image type
60 \-write-mask filename associate a write mask with the image
61 \-verbose print detailed information about the image
62 \-virtual-pixel method
63 virtual pixel access method
65 Miscellaneous Options:
66 \-channel mask set the image channel mask
67 \-debug events display copious debugging information
68 \-help print program options
69 \-log format format of debugging information
70 \-list type print a list of supported option arguments
71 \-version print version information
73 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.
75 The compare program returns 2 on error otherwise 0 if the images are similar or
76 1 if they are dissimilar.
82 \fBCopyright (C) 1999-2016 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