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- From: skip@tacky.cs.olemiss.edu (Skip Sauls)
- Newsgroups: comp.sys.amiga.graphics
- Subject: Re: What is GIF?!!??
- Message-ID: <1993Jan27.155919.17871@ra.msstate.edu>
- Date: 27 Jan 93 15:59:19 GMT
- References: <73234@cup.portal.com> <bburdeau.05bl@redorc.chi.il.us> <10616@cbmger.de.so.commodore.com>
- Sender: news@ra.msstate.edu
- Organization: University of Mississippi, Dept. of Computer Science
- Lines: 42
- Nntp-Posting-Host: tacky.cs.olemiss.edu
-
- In article <10616@cbmger.de.so.commodore.com> peterk@cbmger.de.so.commodore.com (Dr. Peter Kittel, Commodore Germany) writes:
- >Reply-To: cbmehq!cbmger!peterk@cbmvax.commodore.com
- >Followup-To: comp.sys.amiga.graphics
- >Distribution:
- >Organization: Commodore Germany
- >Keywords:
- >
- >In article <bburdeau.05bl@redorc.chi.il.us> bburdeau@redorc.chi.il.us (Bob Burdeau) writes:
- >>PMBC??? Lossless image compression? I like the sound of that.
- >
- >Me too. Recently I saw a show on TV and they had a HD floppy for PC
- >(no floptical, real standard) and this disk carried a *huge* number of
- >full-size pictures, perhaps it was 200. They said there was a special
- >compression procedure used that reduced the images to fractal formulas
- >and only these formulas were stored. I'm doing hard to believe that,
- >as the pictures were standard images of houses, people, landscapes, etc.
- >But it obviously lead to phantastic compression rates (sure with losses).
- >
- >Does anybody know more about this? At least the name of the algorithm?
-
- As part of a graphics course last year, I did a report on fractal
- compression algorithms. I believe that the algorithm used is the
- Fractal Transform Process, developed by persons at Iterated Systems,
- Inc. of Norcross, Georgia. There is an article in the October 1991
- issue of SunWorld written by Louisa Anson and Michael Barnsley, president
- of operations and president of Iterated Systems, Inc., respectively.
-
- The resulting .FIF files have incredible compression ratios and while
- they are lossy, they are not as bad as JPEG files. It is claimed that
- a 33MHz 386 with VGA and no extra hardware can decompress the files at
- 20 frames per second for full motion video. Compression is apparently
- much slower, but that seems to be true for many competing algorithms.
-
- I may be mistaken, but I believe that there is a FIF viewer for the
- Amiga available.
-
- >Best regards, Dr. Peter Kittel // E-Mail to \\ Only my personal opinions...
- >Commodore Frankfurt, Germany \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk
- >Wer's nicht kann, soll's bleiben klopfen oder Steine lassen!
-
- Skip Sauls, Amiga Advocate
- skip@tacky.cs.olemiss.edu
-