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To: Frank A. Coluccio who wrote (466)8/6/1999 10:50:00 PM
From: ftth  Respond to of 626
 
OK, not sure this is the type of thing you're wondering about, but for example, a company called Iterated Systems has been working for quite some time on fractal-based image compression. See: iterated.com

They used to have a Fractal Development Kit (FDK), although it looks like they've refined and grown the product several steps since then. The FDK allowed you to embed fractal-compression/decompression capabilities into Windows applications. There is even a Fractal Image Format (FIF) file type. Certainly these operations could be applied to multimedia streams (although it'd be one screamin' machine to encode in real time) before all the communication channel related processing. I was totally fascinated with this stuff a few years back, and wrote a bunch of code just to mess with "anything fractal," but it's sort of faded from memory.

Also, somewhere in all the digital fountain info from past posts, the group Michael Luby worked with had developed some sort of scalable transport format so that a max resolution image or audio file could be broadcast, and each user's local capabilities could extract a resolution-scaled replica based on the capabilities of their connection and local machine. I forget exactly what/how it worked, but if I come across the specific link I'll send it to you.

dh



To: Frank A. Coluccio who wrote (466)8/6/1999 11:46:00 PM
From: Jay Lowe  Read Replies (1) | Respond to of 626
 
Isn't wavelet compression unsuitable for network traffic because it is inherently extremely lossy?

The only applications of wavelet compression that I have seen are in the area of image compression ... briefly wavelet compression kicks butt on JPEG ... e.g., wavelet compression add-in for PhotoShop.

Interestingly enough, Aware, Inc. (AWRE) of DSL fame is also into wavelet compression ... medical imaging, fingerprint libraries, etc.

Dartmouth College Wavelet Warriors
cs.dartmouth.edu

UCSD Slideshow
www-cse.ucsd.edu

Mathsoft Wavelet Resource Page
mathsoft.com

Aware, Inc. Compression Technology
aware.com