AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

1999.11.25 14:58 "Re: tiffcp", by Martin Bailey
1999.11.26 02:19 "Re: tiffcp", by Tom Lane
1999.11.26 11:00 "Alternative to LZW (was Re: tiffcp)", by John Aldridge
1999.11.26 14:22 "Re: Alternative to LZW (was Re: tiffcp)", by Frank Warmerdam
1999.11.26 17:01 "Re: Alternative to LZW (was Re: tiffcp)", by Tom Lane
1999.11.26 17:18 "Re: Alternative to LZW (was Re: tiffcp)", by Sam Leffler
1999.11.27 06:12 "Re: Alternative to LZW (was Re: tiffcp)", by Tom Lane

1999.11.26 14:22 "Re: Alternative to LZW (was Re: tiffcp)", by Frank Warmerdam

At 21:19 25/11/99 -0500, Tom Lane <tgl@sss.pgh.pa.us> wrote:

ZIP seems about the best unpatented lossless method out there, so it's probably what would have been adopted.

How about PNGs algorithm? I'm not suggesting the interleaving stuff; but I thought the spatial filtering bits were important in order to get the best out of the subsequent ZIP style compression.

I'm fed up with not having a decent free lossless compression algorithm available for TIFF, too. Is there some way this group can move things along?

John,

Well, I doubt there is much we can do to make a new compression format for TIFF, and to expect to have it widely supported. However, I would be game to lift some code out of the PNG library to implement a new compression type in TIFF. Just keep in mind that it isn't going to be widely supported.

Later,

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