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Graphic Tools

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.

Dot Tiff library and tools
/local/graphics/lib/libtiff.a, libtiff.so
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.
Dot ImageMagick
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:
animate combine, convert, display, identify, import, mogrify and montage
The package is meant for JPEG image compression and decompression. The following documentation is available: Besides the library the package includes these additional binaries:
cjpeg, djpeg, jpegtran, rdjpgcom and wrjpgcom
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.
/local/graphics/lib/libXpm.a, libXpm.so
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.
Dot Giftrans
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.)
Dot Giftool
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.
Dot 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 example.
Dot 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 example.c. 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 ChangeLog. There exists even a zlib Home Page.

Maintained by Thomas Thiel. Last modified: Mon Jul 21 13:52:41 MET DST 1997 [an error occurred while processing this directive]