source: general/graphlib/libjpeg/libjpeg-desc.xml@ dcd8072

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Last change on this file since dcd8072 was cf4aab7, checked in by Larry Lawrence <larry@…>, 21 years ago

intro on libjpeg and libtiff

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1<sect2>
2<title>Contents</title>
3
4<para>The libjpeg package contains <command>cjpeg</command>,
5<command>djpeg</command>, <command>jpegtran</command>,
6<command>rdjpgcom</command>, <command>wrjpgcom</command> and
7<filename>libjpeg</filename> libraries.</para>
8
9</sect2>
10
11<sect2><title>Description</title>
12
13<sect3><title>cjpeg</title>
14<para><command>cjpeg</command> compresses image files to produce a
15<acronym>JPEG</acronym>/<acronym>JFIF</acronym> file on the standard
16output. Currently supported input file formats are:
17<acronym>PPM</acronym> (PBMPLUS color
18format), <acronym>PGM</acronym> (PBMPLUS gray-scale
19format), <acronym>BMP</acronym>, and Targa.</para></sect3>
20
21<sect3><title>djpeg</title>
22<para><command>djpeg</command> decompresses image files from
23<acronym>JPEG/JFIF</acronym> format to either <acronym>PPM</acronym>
24(PBMPLUS color format), <acronym>PGM</acronym> (PBMPLUS gray-scale
25format), <acronym>BMP</acronym>, or Targa
26format.</para></sect3>
27
28<sect3><title>jpegtran</title>
29<para><command>jpegtran</command> is used for lossless transformation of
30<acronym>JPEG</acronym> files.</para></sect3>
31
32<sect3><title>rdjpgcom</title>
33<para><command>rdjpgcom</command> displays text comments from within a
34<acronym>JPEG</acronym> file.</para></sect3>
35
36<sect3><title>wrjpgcom</title>
37<para><command>wrjpgcom</command> inserts text comments into a
38<acronym>JPEG</acronym> file.</para></sect3>
39
40<sect3><title>jpeg libraries</title>
41<para>These libraries are used by many programs for reading and writing
42jpeg format files.</para></sect3>
43
44</sect2>
45
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