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Commit | Line | Data |
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f65434b9 | 1 | Summary: Decoder implementation of the JBIG2 image compression format |
cd313560 | 2 | Summary(pl): Implementacja dekodera formatu kompresji obrazu JBIG2 |
f65434b9 | 3 | Name: jbig2dec |
a698035f JB |
4 | Version: 0.9 |
5 | Release: 1 | |
f65434b9 | 6 | License: GPL with clause allowing linking to AFPL Ghostscript |
7 | Group: Applications | |
cd313560 | 8 | Source0: http://dl.sourceforge.net/jbig2dec/%{name}-%{version}.tar.gz |
a698035f JB |
9 | # Source0-md5: e4bff86825ccde304c19bd7ec122fda4 |
10 | Patch0: %{name}-shared.patch | |
cd313560 | 11 | URL: http://jbig2dec.sourceforge.net/ |
a698035f JB |
12 | BuildRequires: autoconf >= 2.53 |
13 | BuildRequires: automake >= 1:1.7 | |
14 | BuildRequires: libpng-devel | |
15 | BuildRequires: libtool | |
16 | BuildRequires: zlib-devel | |
f65434b9 | 17 | BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n) |
18 | ||
19 | %description | |
cd313560 JB |
20 | jbig2dec is a decoder implementation of the JBIG2 image compression |
21 | format. JBIG2 is designed for lossy or lossless encoding of 'bilevel' | |
22 | (1-bit monochrome) images at moderately high resolution, and in | |
23 | particular scanned paper documents. In this domain it is very | |
24 | efficient, offering compression ratios on the order of 100:1. | |
25 | ||
26 | This is a decoder only implementation, and currently is in the alpha | |
27 | stage, meaning it doesn't completely work yet. However, we are | |
28 | maintaining parity with available encoders, so it is useful for real | |
29 | work. | |
30 | ||
31 | The specificication has been published as ISO IEC 14492 and ITU T.88. | |
32 | These documents completely describe the format and they'll be required | |
33 | if you want to understand the code and contribute. We prefer the ISO | |
34 | version, but haven't discovered significant differences between the | |
35 | two. | |
36 | ||
37 | JBIG2 also includes the CCITT T.4 and T.6 (group 3 and group 4) fax | |
38 | encodings, which are documented separately. Their specifications and | |
39 | T.88 can be obtained from the ITU. The ISO version of JBIG2 can be | |
40 | obtained through the ISO website. | |
41 | ||
42 | %description -l pl | |
43 | jbig2dec to implementacja dekodera formatu kompresji obrazu JBIG2. | |
44 |