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huffman code for ccitt fax group 3
Posted by roseta on April 27th, 2006


hello,

I want to have the huffman encoding for .tif files that are used to
compress it for sending fax.
It is for black and white files.


any information espicially algorithm or the code is much appriciated.


Thanks in advance
roseta.

Posted by jindra on April 27th, 2006


hi, this is called CCITT group 3 and group 4 format, specification can
be found at www.itu.ch, but i think it is quite hard to code everything
from scratch, i have succesfully used libtiff from
http://www.libtiff.org/, where you can "dig" some functions for
decoding CCITT to get raw data

jindra


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