Here you can find links to various documentation about the locally
installed imageing software. The software can be found in
/local/graphics. The netpbm (pbmplus)
package is located in /local/netpbm.
GIMP can be found under /local/gimp.
Tiff library and tools
This software provides support for the Tag Image File Format (TIFF). There is
library for reading and writing this format available. Also there are various
tools to convert images from other formats
to TIFF or vice versa.
This is a powerfull image display and interactive image manipulating software
package. Beside the normal manipulation available you can create GIF animations
and sort of contact sheet (even from mpeg videos). Included in the packages are
the following binaries:
The package is meant for JPEG image compression and decompression. The following
documentation is available:
Besides the library the package includes these additional binaries:
The JBIG-KIT is a portable image compression library, following the JBIG standard.
Included in the package are two binaries to convert from
JBIG to PBM and from
PBM to JBIG.
For further information you may also read the installation instructions.
XPM (X PixMap) is a format for storing/retrieving X pixmaps to/from files. Read
the Manual and the FAQ
for further information. Together with the package sxpm is provided.
The MPEG Library is based on an effort from the University of California at Berkeley
to create a portable, software-based MPEG decoder. The library offers a simple interface
that allows a programmer to extract frames from an MPEG stream (either before or after
converting to RGB colour space). The documentation is also available as
postscript file. Take a look at the example files
easympeg.c and mpegtest.c.
Giftrans is a utility to convert any GIF image into a GIF89a image. It allows you to
add/remove comments, to change colors, to set the transparent color and much more.
See the manual page for more details.)
Giftool is a small tool to manipulate GIF89a images. One can set interlace mode,
set the transparent color, add/remove a comment and dump image information.
There is no manual page available. Use the -help option to get the usage.
Portable Network Graphics (PNG) Library
PNG is the Portable Network Graphics format and is designed to be the successor to
GIF format. Some advantages (over GIF) are: alpha channels (variable transparency),
gamma correction (cross-platform control of image brightness), two-dimensional
interlacing (a method of progressive display), better (and lossless) compression
(see zlib below) ... but it does not support multiple-images (within one single file)
or animation. Visit the PNG Home Page for
more information or look at this
zlib Compression Library
zlib 1.0.4 is a general purpose data compression library. All the code
is reentrant (thread safe). The data format used by the zlib library
is described by RFCs (Request for Comments) 1950 to 1952.
All functions of the compression library are documented in the file
zlib.h. A usage example
of the library is given in the file
which also tests that the library is working correctly. Another
example is given in the file minigzip.c. The compression library itself
is composed of all source files except example.c and minigzip.c.
The changes made in version 1.0.4 are documented in the file
There exists even a zlib Home Page.
Maintained by Thomas Thiel.
Last modified: Mon Jul 21 13:52:41 MET DST 1997
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