> NAME

identify - describe an image or image sequence.
> Contents

Synopsis
Description
Options
Authors
Copyright
> Synopsis

identify file [ file ... ]
 

> Description

Identify describes the format and characteristics of one or more image files. It will also report if an image is incomplete or corrupt. The information displayed includes the scene number, the file name, the width and height of the image, whether the image is colormapped or not, the number of colors in the image, 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. An example line output from identify follows:

    images/aquarium.miff 640x480 PseudoClass 256c
           308135b MIFF 1s

If -verbose is set, expect additional output including any image comment:
 

    Image: images/aquarium.miff
    class: PseudoClass
    colors: 256
    signature: eb5dca81dd93ae7e6ffae99a527eb5dca8...
    matte: False
    geometry: 640x480
       depth: 8
    bytes: 308135
    format: MIFF
    comments:
    Imported from MTV raster image: aquarium.mtv

For some formats, additional format-specific information about the file will be written if the -debug coder or -debug all option is used.

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> Options

Options are processed in command line order. Any option you specify on the command line remains in effect for the set of images immediately following, until the set is terminated by the appearance of any option or -noop.

For a more detailed description of each option, see GraphicsMagick(1).
 


> -authenticate <string>

decrypt image with this password

> -cache <threshold>

megabytes of memory available to the pixel cache

> -debug <events>

enable debug printout

> -density <width>x<height>

vertical and horizontal resolution in pixels of the image

> -depth <value>

depth of the image

> -format <string>

output formatted image characteristics

> -help

print usage instructions

> -interlace <type>

the type of interlacing scheme

> -limit <type> <value>

Disk, Map, or Memory resource limit

> -log <string>

> -ping

efficiently determine image characteristics

> -sampling-factor <horizontal_factor>x<vertical_factor>

sampling factors used by JPEG or MPEG-2 encoder and YUV decoder/encoder.

> -size <width>x<height>{+offset}

width and height of the image

> -verbose

print detailed information about the image

> -version

print GraphicsMagick version string

For a more detailed description of each option, see GraphicsMagick(1).
 

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> Authors

John Cristy, magick-users@graphicsmagick.org, GraphicsMagick Group,
Glenn Randers-Pehrson, randeg@alum.rpi.edu, GraphicsMagick Group.

 

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> Copyright

Copyright (C) 2002 GraphicsMagick Group

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files ("GraphicsMagick"), to deal in GraphicsMagick without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of GraphicsMagick, and to permit persons to whom the GraphicsMagick is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of GraphicsMagick.

The software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement.In no event shall GraphicsMagick Group be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with GraphicsMagick or the use or other dealings in GraphicsMagick.

Except as contained in this notice, the name of the GraphicsMagick Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in GraphicsMagick without prior written authorization from the GraphicsMagick Group.

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