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> There's a thread right now in rec.photo.digital > about "lossless compression" of photos. > > I made the point that this was a losing battle, > from the point of view of information theory. > The more real information is in the image, the > less you can compress without loss. There's a lot of work going on by people trying to find new compression algorithms for graphics. Most of the current lossless stuff is based on LZW-type compression schemes, which work great for text and lousy for graphics. david -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Please: Stay on topic. Trim quoted messages. http://www.leben.com/lists for list instructions.