1identify(1)                 General Commands Manual                identify(1)
2
3
4

NAME

6       identify  -  describes  the  format  and characteristics of one or more
7       image files.
8

SYNOPSIS

10       identify [options] input-file
11

OVERVIEW

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
23       For more information about the identify command, point your browser  to
24       file:///usr/share/doc/ImageMagick-6.7.8/www/identify.html            or
25       http://www.imagemagick.org/script/identify.php.
26

DESCRIPTION

28       Image Settings:
29         -alpha option        on, activate, off, deactivate, set, opaque, copy
30                              transparent, extract, background, or shape
31         -antialias           remove pixel-aliasing
32         -authenticate value  decrypt image with this password
33         -channel type        apply option to select image channels
34         -colorspace type     alternate image colorspace
35         -crop geometry       cut out a rectangular region of the image
36         -define format:option
37                              define one or more image format options
38         -define unique=true  return the number of unique colors in the image
39         -density geometry    horizontal and vertical density of the image
40         -depth value         image depth
41         -extract geometry    extract area from image
42         -features distance   analyze image features (e.g. contrast,  correla‐
43       tion)
44         -format "string"     output formatted image characteristics
45         -fuzz distance       colors within this distance are considered equal
46         -gamma value         of gamma correction
47         -interlace type      type of image interlacing scheme
48         -interpolate method  pixel color interpolation method
49         -limit type value    pixel cache resource limit
50         -list  type           Color, Configure, Delegate, Format, Magic, Mod‐
51       ule,
52                              Resource, or Type
53         -matte               store matte channel if the image has one
54         -monitor             monitor progress
55         -ping                efficiently determine image attributes
56         -quiet               suppress all warning messages
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         -strip               strip image of all profiles and comments
66         -unique              display the number of unique colors in the image
67         -units type          the units of image resolution
68         -verbose             print detailed information about the image
69         -virtual-pixel method
70                              virtual pixel access method
71
72       Image Operators:
73         -negate              replace each pixel with its complementary color
74
75       Miscellaneous Options:
76         -debug events        display copious debugging information
77         -help                print program options
78         -list type           print a list of supported option arguments
79         -log format          format of debugging information
80         -version             print version information
81
82       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

NOTE

89       Although  some  options appear to modify the file to be identified, the
90       identify command is strictly read only. For instance, the  crop  option
91       crops the in-memory image and then describes the result.
92
93

SEE ALSO

95       ImageMagick(1)
96
97

99       Copyright  (C)  1999-2012 ImageMagick Studio LLC. Additional copyrights
100       and      licenses      apply      to      this      software,       see
101       file:///usr/share/doc/ImageMagick-6.7.8/www/license.html             or
102       http://www.imagemagick.org/script/license.php
103
104
105
106ImageMagick                Date: 2009/01/10 01:00:00               identify(1)
Impressum