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 :: Mailing Lists

[ILUG] wavelet compression

[ILUG] wavelet compression

Paul Kelly longword at esatclear.ie
Tue Apr 18 16:02:15 IST 2000


"John P. Looney" wrote:
>  I dunno about that. I was doing some playing around. Basically, taking a
> large 400k jpeg, and saving it as a 200k wavelet compressed image. It
> didn't look too bad, but it was far from indistingushable.

That was never going to be a good test. Both JPEG and wavelet only work
well on the original giant true colour image - as high quality as you
can get your hands on. When you go transcoding a file from one lossy
compression algorithm to a fundamentally different one, Bad Things will
happen.

Paul.




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