Path: utzoo!mnetor!uunet!mcvax!ukc!strath-cs!rk
From: rk@cs.strath.ac.uk (Richard Kingslake)
Newsgroups: comp.graphics
Subject: Re: Fractals!
Message-ID: <931@stracs.cs.strath.ac.uk>
Date: 26 Apr 88 09:07:46 GMT
References: <811@unioncs.UUCP> <1776@uhccux.UUCP> <5595@pyr.gatech.EDU>
Reply-To: rk@cs.strath.ac.uk
Organization: Comp. Sci. Dept., Strathclyde Univ., Scotland.
Lines: 22
Keywords: Fractals, Mandelbrot, Julia, Chaos, Iteration in the Complex Plane
Summary: What is IFS?

In article <5595@pyr.gatech.EDU> paulm@pyr.gatech.EDU (PAUL MILLER) writes:
> ...
>
>   The gist of the article involves representing ANY image by its IFS codes, 
>thereby achieving significant image compression ratios (> 10,000 : 1).

I am impressed by the ratio of 10,000:1.  Can it be true?

Anyway, in my very great ignorance, I have never heard of "IFS codes".  Can
anyone explain?  At the moment I compress all my images for storage using
PKARC.  It often achieves compression ratios of 3:1, but I should certainly
like to see 10,000:1.  Let's see :- a picture 512 X 512 pixels using one
byte per pixel occupies (uncompressed) 262144 bytes.  Using the IFS system
mentioned this is compressed to just 27 bytes! Fantastic!


-- 
	Richard Kingslake

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