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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
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