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identify(1)                                                        identify(1)



NAME
       identify - describes the format and characteristics of one or more image files.

SYNOPSIS
       identify [options] input-file

OVERVIEW
       The  identify program is a member of the ImageMagick(1) suite of tools.  It describes the format and character-
       istics of one or more image files. It also reports if an  image  is  incomplete  or  corrupt.  The  information
       returned includes the image number, the file name, the width and height of the image, whether the image is col-
       ormapped or not, the number of colors in the image (by default off use -define unique=true option), the  number
       of  bytes in the image, the format of the image (JPEG, PNM, etc.), and finally the number of seconds it took to
       read and process the image. Many more attributes are available with the verbose option.

       For more information  about  the  identify  command,  point  your  browser  to  file:///usr/share/doc/ImageMag-
       ick-6.7.9/www/identify.html or http://www.imagemagick.org/script/identify.php.

DESCRIPTION
       Image Settings:
         -antialias           remove pixel-aliasing
         -authenticate value  decrypt image with this password
         -channel type        apply option to select image channels
         -crop geometry       cut out a rectangular region of the image
         -define format:option
                              define one or more image format options
         -define unique=true  return the number of unique colors in the image
         -density geometry    horizontal and vertical density of the image
         -depth value         image depth
         -endian type         endianness (MSB or LSB) of the image
         -extract geometry    extract area from image
         -features distance   analyze image features (e.g. contrast, correlation)
         -format "string"     output formatted image characteristics
         -fuzz distance       colors within this distance are considered equal
         -interlace type      type of image interlacing scheme
         -interpolate method  pixel color interpolation method
         -limit type value    pixel cache resource limit
         -list type           Color, Configure, Delegate, Format, Magic, Module,
                              Resource, or Type
         -matte               store matte channel if the image has one
         -monitor             monitor progress
         -ping                efficiently determine image attributes
         -quiet               suppress all warning messages
         -regard-warnings     pay attention to warning messages
         -sampling-factor geometry
                              horizontal and vertical sampling factor
         -seed value          seed a new sequence of pseudo-random numbers
         -set attribute value set an image attribute
         -size geometry       width and height of image
         -strip               strip image of all profiles and comments
         -unique              display the number of unique colors in the image
         -units type          the units of image resolution
         -verbose             print detailed information about the image
         -virtual-pixel method
                              virtual pixel access method

       Image Operators:
         -negate              replace each pixel with its complementary color

       Miscellaneous Options:
         -debug events        display copious debugging information
         -help                print program options
         -log format          format of debugging information
         -list type           print a list of supported option arguments
         -version             print version information

       By  default,  the image format of 'file' is determined by its magic number.  To specify a particular image for-
       mat, 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.

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


SEE ALSO
       ImageMagick(1)


COPYRIGHT
       Copyright (C) 1999-2012 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software,  see
       file:///usr/share/doc/ImageMagick-6.7.9/www/license.html or http://www.imagemagick.org/script/license.php



ImageMagick                Date: 2009/01/10 01:00:00               identify(1)