Posted by Bernie Siegrist on 2000-06-04
Date: Sat, 03 Jun 2000 01:45:52 +0400 From: Eibon <Eibon@xxx.xxx> Subject: Re: Wavelet compression >> Try www.wotsit.org it has the most complete explanation of graphics formats >> which contains the JPEG compression and a bunch of others. >Thanks of course, but I already know about that site and there is no >information about wavelet. All what I have found is a non working link. >So... Question is still open... Help PLEASE ! > > P.S. I already have information about huge amount of formats and >compression algorhitms, so, the only thing I need is information about >wavelet. Currently I have not found something more than sample pictures >and messages which contain <It's Cool... It's Best...>. So... > > WBW&R4U, Eibon... There was an archive program called WIC (Wavelet Intelligent Compressor). It was written by a person called Robert Debrayel and compresses JPG images by factor 4 or 5(!), not to mention MP3 or plain text. The version I have is v0.5b from August 1 '96 which is somewhat buggy (sometimes it crashes or reports an unbroken archive as broken) but still amazing enough. I failed to find/contact the programmer (his e-mail address has become invalid), however I remember that he referred to an algorithm called HARC-C. This led me to a program called "The Compression Engine" (CE) which produces .wif files (I should have the specs for these somewhere). One difference: WIC is lossless compression, CE is not. Also, it seems to me that WIC development was cancelled when Compression Engines got an exclusive license for HARC-C. Some addresses I remember (i.e. found): http://www.harc.edu/HARCC.html http://www.cengines.com Maybe you're luckier than me with finding some information. :-)
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