1identify(1) General Commands Manual identify(1)
2
6 identify - describes the format and characteristics of one or more
7 image files.
8
10 identify [options] input-file
11
13 The identify program is a member of the ImageMagick(1) suite of tools.
14 It describes the format and characteristics of one or more image files.
15 It also reports if an image is incomplete or corrupt. The information
16 returned includes the image number, the file name, the width and height
17 of the image, whether the image is colormapped or not, the number of
18 colors in the image (by default off use -define unique=true option),
19 the number of bytes in the image, the format of the image (JPEG, PNM,
20 etc.), and finally the number of seconds it took to read and process
21 the image. Many more attributes are available with the verbose option.
22 For more information about the identify command, point your browser to
24 file:///usr/share/doc/ImageMagick-6.6.4/www/identify.html or
25 http://www.imagemagick.org/script/identify.php.
26
28 Image Settings:
29 -antialias remove pixel-aliasing
30 -authenticate value decrypt image with this password
31 -channel type apply option to select image channels
32 -crop geometry cut out a rectangular region of the image
33 -define format:option
34 define one or more image format options
35 -define unique=true return the number of unique colors in the image
36 -density geometry horizontal and vertical density of the image
37 -depth value image depth
38 -extract geometry extract area from image
39 -features distance display image features (e.g. contrast, correla‐
40 tion)
41 -format "string" output formatted image characteristics
42 -fuzz distance colors within this distance are considered equal
43 -interlace type type of image interlacing scheme
44 -interpolate method pixel color interpolation method
45 -limit type value pixel cache resource limit
46 -list type Color, Configure, Delegate, Format, Magic, Mod‐
47 ule,
48 Resource, or Type
49 -matte store matte channel if the image has one
50 -monitor monitor progress
51 -ping efficiently determine image attributes
52 -quiet suppress all warning messages
53 -regard-warnings pay attention to warning messages
54 -sampling-factor geometry
55 horizontal and vertical sampling factor
56 -seed value seed a new sequence of pseudo-random numbers
57 -set attribute value set an image attribute
58 -size geometry width and height of image
59 -strip strip image of all profiles and comments
60 -unique display the number of unique colors in the image
61 -units type the units of image resolution
62 -verbose print detailed information about the image
63 -virtual-pixel method
64 virtual pixel access method
65 Image Operators:
67 -negate replace each pixel with its complementary color
68 Miscellaneous Options:
70 -debug events display copious debugging information
71 -help print program options
72 -log format format of debugging information
73 -list type print a list of supported option arguments
74 -version print version information
75 By default, the image format of `file' is determined by its magic num‐
77 ber. To specify a particular image format, precede the filename with
78 an image format name and a colon (i.e. ps:image) or specify the image
79 type as the filename suffix (i.e. image.ps). Specify 'file' as '-' for
80 standard input or output.
81
83 ImageMagick(1)
84
87 Copyright (C) 1999-2010 ImageMagick Studio LLC. Additional copyrights
88 and licenses apply to this software, see
89 file:///usr/share/doc/ImageMagick-6.6.4/www/license.html or
90 http://www.imagemagick.org/script/license.php
91ImageMagick Date: 2009/01/10 01:00:00 identify(1)