Moose wrote:
> And... JPEG2000 isn't free and requires licenses even when used at no cost.
That depends on which implementation you use. The jasper refernce
implementation is free, has BSD-style licensing (ie acknowledge they
wrote it but otherwise do whatever you like) but is painfully slow (~10x
slower than normal jpeg to encode, ~3 times slower to decode). As for
commercial implementations, kakadu's version is a lot faster, but still
noticeably slower than normal jpeg to encode.
As far as compression goes, working with 24-bit images you gain
something around 10-25% for the same quality (the artifacts you see are
different, but equivalent based on my eyes). Once you get past 24-bit,
jpeg2000 wins by default because jpeg-normal doesn't do that, of course.
-- dan
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