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TIFF and LibTiff Mail List Archive

Thread

2006.05.31 16:56 "[Tiff] OT: jbig2 patent licensing", by Alberto Accomazzi
2006.06.01 18:31 "[Tiff] Re: Tiff Digest, Vol 25, Issue 1", by Glenn Widener
2006.06.04 05:44 "Re: [Tiff] Re: Tiff Digest, Vol 25, Issue 1", by Bob Friesenhahn
2006.06.04 06:41 "[Tiff] sample code for 48bit color tiff read and write using LIBTIFF", by Venkatasalapathy D - TLS, Chennai
2006.06.03 13:47 "[Tiff] sample code for 48bit color tiff read and write using LIBTIFF", by Venkatasalapathy D - TLS, Chennai
2006.06.04 14:37 "[Tiff] Re: sample code for 48bit color tiff read and write using LIBTIFF", by Bob Friesenhahn

2006.05.31 16:56 "[Tiff] OT: jbig2 patent licensing", by Alberto Accomazzi

Forgive the slightly offtopic question, but I know that many people on the list are involved in compression and I need some help. As you may know, there is now a JBIG2 open source encoder available (for arithmetic encoding) which looks promising:

http://www.imperialviolet.org/jbig2.html

I would like to use the software to create and distribute jbig2 compressed data in PDF files for the non-profit project I work on. Am I correct in saying that even as a user I need to worry about obtaining the proper licenses from IBM and Mitsubishi just so I can use the encoder? The only info on JBIG2 patents I found is here:

http://www.jpeg.org/jbig/faq.phtml?action=show_answer&question_id=q3f042a7298c94

And what exactly are the patents in question?

TIA,

-- Alberto

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Alberto Accomazzi                      aaccomazzi(at)cfa harvard edu
NASA Astrophysics Data System                        ads.harvard.edu
Harvard-Smithsonian Center for Astrophysics      www.cfa.harvard.edu
60 Garden St, MS 67, Cambridge, MA 02138, USA
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