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* * *
ImageMagick is a robust collection of tools and libraries to read,
write, and manipulate an image in many image formats (over 68 major
formats) including popular formats like TIFF, JPEG, PNG, PDF, Photo CD,
and GIF. With ImageMagick you can create images dynamically, making it
suitable for Web applications. You can also resize, rotate, sharpen,
color reduce, or add special effects to an image and save your completed
work in the same or differing image format. Image processing operations
are available from the command line, as well as through C, C++, and
PERL-based programming interfaces.
Here is just a few examples of what ImageMagick can do:
Convert an image from one format to another (e.g. TIFF to GIF)
Resize, rotate, sharpen, color reduce, or add special effects to an image
Create a montage of image tumbnails
Create a transparent image suitable for use on the Web
Turn a group of images into a GIF animation sequence
Create a composite image by combining several separate images
Draw shapes or text on an image
Decorate an image with a border or frame
Describe the format and characteristics of an image
You can access ImageMagick functions directly from the command line
using the ImageMagick tools convert, mogrify, montage, combine, or
identify. Use the display program to interactively manipulate your
images or animate an image sequence from a graphical panel. Finally
you have access to the various image manipulation methods directly
from your favorite application development environment: Perl, C++, C,
or Java. These programs and much more are explained by following the
links from this page or read the ImageMagick Users Guide.
ImageMagick is known to compile and run on virtually any Unix. system and
Linux. It also runs under Windows 2000, Windows 95/98, Macintosh, VMS,
and OS2. See the install guide for compiling instructions. Pre-compiled
binaries are available for some of the more popular operating systems.
The offical ImageMagick web page is:
http://ww.imagemagick.org/
ImageMagick is available via ftp as
ftp://ftp.wizards.dupont.com/pub/ImageMagick
Other versions are available as
ftp://ftp.wizards.dupont.com/pub/ImageMagick/binaries
ftp://ftp.wizards.dupont.com/pub/ImageMagick/mac
ftp://ftp.wizards.dupont.com/pub/ImageMagick/nt
ftp://ftp.wizards.dupont.com/pub/ImageMagick/vms
ftp://ftp.wizards.dupont.com/pub/ImageMagick/linux
* * * * * * * * *
ImageMagick Tools
display
Display is a machine architecture independent image and display
program. It can display an image on any workstation display
running an X server. Display can read and write many of the more
popular image formats (e.g. JPEG, TIFF, PNM, Photo CD, etc.).
You can perform these functions on the image:
o load an image from a file
o display the next image
o display the former image
o display a sequence of images as a slide show
o write the image to a file
o print the image to a Postscript printer
o delete the image file
o create a Visual Image Directory
o select the image to display by its thumbnail rather than name
o undo last image transformation
o copy a region of the image
o paste a region to the image
o restore the image to its original size
o refresh the image
o half the image size
o double the image size
o resize the image
o crop the image
o cut the image
o flop image in the horizontal direction
o flip image in the vertical direction
o rotate the image 90 degrees clockwise
o rotate the image 90 degrees counter-clockwise
o rotate the image
o shear the image
o trim the image edges
o invert the colors of the image
o vary the color brightness
o vary the color saturation
o vary the image hue
o gamma correct the image
o sharpen the image contrast
o dull the image contrast
o perform histogram equalization on the image
o perform histogram normalization on the image
o negate the image colors
o convert the image to grayscale
o set the maximum number of unique colors in the image
o reduce the speckles within an image
o eliminate peak noise from an image
o detect edges within the image
o emboss an image
o oil paint an image
o segment the image by color
o annotate the image with text
o draw on the image
o edit an image pixel color
o edit the image matte information
o composite an image with another
o add a border to the image
o add an image comment
o apply image processing techniques to a region of interest
o display information about the image
o display information about this program
o display image to background of a window
o set user preferences
o discard all images and exit program
o change the level of magnification
o display images specified by a World Wide Web (WWW)
uniform resource locator (URL)
import
Import reads an image from any visible window on an X server and
outputs it as an image file. You can capture a single window, the
entire screen, or any rectangular portion of the screen. You can
use display (see display(1)) utility for redisplay, printing,
editing, formatting, archiving, image processing, etc. of the
captured image.
The target window can be specified by id, name, or may be selected
by clicking the mouse in the desired window. If you press a
button and then drag, a rectangle will form which expands and
contracts as the mouse moves. To save the portion of the screen
defined by the rectangle, just release the button. The keyboard
bell is rung once at the beginning of the screen capture and twice
when it completes.
animate
Animate displays a sequence of images on any workstation display
running an X server. Animate first determines the hardware
capabilities of the workstation. If the number of unique colors
in an image is less than or equal to the number the workstation
can support, the image is displayed in an X window. Otherwise the
number of colors in the image is first reduced to match the color
resolution of the workstation before it is displayed.
This means that a continuous-tone 24 bits/pixel image can display
on a 8 bit pseudo-color device or monochrome device. In most
instances the reduced color image closely resembles the original.
Alternatively, a monochrome or pseudo-color image sequence can
display on a continuous-tone 24 bits/pixels device.
montage
Montage creates a composite image by combining several separate
images. The images are tiled on the composite image with the name
of the image optionally appearing just below the individual tile.
convert
Convert converts an input file using one image format to an output
file with a differing image format. By default, the image format
is determined by it's magic number. To specify a particular image
format, 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.
If file has the extension .Z, the file is decoded with
uncompress.
mogrify
Mogrify transforms an image or a sequence of images. These
transforms include image scaling, image rotation, color reduction,
and others. The transmogrified image overwrites the original
image.
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.
combine
Combine combines images to create new images.