Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uakari.primate.wisc.edu!caen!uwm.edu!uwvax!pipe.cs.wisc.edu!lee
From: lee@pipe.cs.wisc.edu (Soo Lee)
Newsgroups: comp.sys.next
Subject: DCT(JPECG), WAVELET on NeXTDimension
Keywords: JPEG, WAVELET, compression, NextDimension
Message-ID: <1991May30.233044.7890@spool.cs.wisc.edu>
Date: 30 May 91 23:30:44 GMT
Sender: news@spool.cs.wisc.edu (The News)
Organization: U of Wisconsin CS Dept
Lines: 15

Hi all,

I am afraid that C-CUBE is changing their mind on JPEG chip. As I learned
that DTC(Discrete Cosine Transformation) is implemented on JPEG chip, I am
puzzled why they didn't switch to WAVELET algorithm which appears better,
cheaper and faster than DTC algorithm. I agree that WAVELET comes later
that DTC as JPEG emerges its standard but they could switch its standard
in the infancy of WAVELET. Since Postscript II has internal DTC filter, it
is not highly likely for NeXT to change daughterboard with WAVELET soon.
However, performancewise, NeXT would rather change its compression support
in the favor of WAVELET algorithm if daughterboard design won't cost much.
Is there anyone who can tell me what is the future of "daughter board" of
NeXTDimension could be?

Soo	lee@cs.wisc.edu