ImageMagick - Describe an Image or Image Sequence

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 ImageMagick(1).

-authenticate <string>

decrypt image with this password

-cache <threshold>

(This option has been replaced by the -limit option)

-debug <events>

enable debug printout

-density <width>x<height>

vertical and horizontal resolution in pixels of the image

-depth <value>

depth of the image

-extract <width>x<height>{+-}<x>{+-}<y>{%}{@} {!}{<}{>}

extract an area from the image while decoding

-format <string>

output formatted image characteristics

-help

print usage instructions

-interlace <type>

the type of interlacing scheme

-limit <type> <value>

Disk, File, Map, or Memory resource limit

-list <type>

the type of list

-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 ImageMagick version string

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

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Authors

John Cristy, magick-users@imagemagick.org, ImageMagick Studio LLC,
Glenn Randers-Pehrson, randeg@alum.rpi.edu, ImageMagick Studio LLC.

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Copyright

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

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 ImageMagick Studio 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 ImageMagick or the use or other dealings in ImageMagick.

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

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