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freebsd-ports/graphics/libdjvu++/pkg-descr
Ade Lovett efa4d5ebbc libdjvu++ is AT&T's DjVu library from scanned images
See http://www.djvu.com/ for more details

PR:		12722
Submitted by:	Mikhail Teterin <mi@aldan.algebra.com>
2000-03-29 21:22:50 +00:00

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The DjVu Reference Library does not contain the entire implementation of
the DjVu system. While it contains the entire decoder, and a big
piece of the encoder, it does not contain the sophisticated encoding
strategies necessary for reaching the highest compression ratios.
Among other things, The DjVu Reference Library contains the full DjVu
decoder, the full IW44 wavelet encoder/decoder for continuous tone
images, and the back-end of JB2 bilevel image compression technique.
However, it does not contain the code for separating document images
into foreground and background layers, nor does it contain the code of
the lossy JB2 scheme that achieves the highest compression ratios on
bitonal images.
WWW: http://www.djvu.com/