Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!saturn!chucko
From: chucko@saturn.ucsc.edu (Chuck Stein)
Newsgroups: comp.graphics
Subject: Re: SigGraph Fractal Compression
Summary: Fidelity of fractal compression?
Message-ID: <8770@saturn.ucsc.edu>
Date: 18 Aug 89 16:52:47 GMT
References: <444@mit-amt.MEDIA.MIT.EDU> <20400001@inmet> <5455@ttidca.TTI.COM>
Organization: U.C. Santa Cruz, CIS/CE.
Lines: 11


	I have heard no talk of fidelity of the reconstructed fractally
compressed images.  Has Barnsly or anyone else compared reconstructed
images with those produced using other techniques such as DCT.  I haven't
seen the latest pictures, but the old ones look quite impressionistic.
MSE-based signal-to-noise ratio fidelity metrics are poor when comparing
across different compression techniques, but subjective rating-scale
tests or psychophysical tests can be performed to compare between methods.
What kind of fidelity measures do they talk about (if they do)?
	
	Chuck Stein	{chucko@saturn.ucsc.edu}