Re: Wavelet codec from France

ChristianHJW wrote:
> 
> Sorry, if this was mail to here before i joined, but i thought i let you
> know as the email ( hopefully ) doesnt hurt :
> 
> http://rududu.ifrance.com/rududu/indexen.htm
> 
> Its said to be working fine with VfW ... its not very good some testers
> said, but a working wavelet video codec .... anybody knows the authors ?

The site was down when I tested. In the page cached by Google,
there is very little text, a download link to a beta version
and the email address [email protected].
I found the codec archive at http://www.divx-digest.com/software/rududu_codec.html.
It is a codec for Windows.

By the way, I have been in touch with the author/inventor of "hierarchical
enumerative encoding" (as good as adaptive arithmetic encoding when encoding
bitplane data) and he ensures me that the algorithm is patent-free.

My attempts at producing a better algorithm for encoding wavelet coefficients
has failed. It performed better than my mockup-SLCCA in only very few test
images but 30% worse on average... Nah, well.


/ Johan
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