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Article #2275

Re: JPEG decompressor? (Summary)

#2275
From: Aaron Giles
Date: Mon, 31 Aug 1992 08:47
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 David> Thanks very much for the summary.  I just want to say that
 David> *if* you are lucky enough to have a 24-bit color system (and I
 David> realize this thread is about people who don't), I think
 David> JPEGView is pretty good. It does have the annonying habit of
 David> crashing if you have a bad or incomplete file; it would be
 David> nicer if it could politely tell you something's amiss rather
 David> than take out the machine.  Does anyone know if the beta
 David> version of GifConverter handles bad JPEG files better?

I suspect GIFConverter has the same problems JPEGView does, as they
both rely on QuickTime to do the decoding, and it's the QuickTime JPEG
decompressor which chokes and crashes the system during decompression
of bad images.  I suppose a lack of thorough error checking is a price
you pay to get the speed that QuickTime gives you.

Returning to the color-quantization issues raised before, however --
and at the risk of giving too much away about software still in
development :-) -- let me just say that JPEGView 2.0 *will* support
color quantization on 8-bit (or less) systems, and it will be fast.

'Nuff said.

Aaron Giles
JPEGView Author
a-giles@uchicago.edu
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Message-ID: <A-GILES.92Aug31094752@shift2.uchicago.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!dxcern!dxcern!a-giles
References: <1992Aug27.040224.29043@mmm.serc.3m.com> <csmith-270892174443@cyrano.gmu.edu> <1992Aug29.000004.26165@cello.hpl.hp.com> <1992Aug28.221733.15201@husc3.harvard.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!dxcern!dxcern!a-giles
From: a-giles@uchicago.edu (Aaron Giles)
Subject: Re: JPEG decompressor? (Summary)
In-Reply-To: fry@tara.harvard.edu's message of 29 Aug 92 02:17:33 GMT
Message-ID: <A-GILES.92Aug31094752@shift2.uchicago.edu>
Sender: news@dxcern.cern.ch (USENET News System)
Reply-To: a-giles@uchicago.edu
Organization: University of Chicago High Energy Physics
References: <1992Aug27.040224.29043@mmm.serc.3m.com> <csmith-270892174443@cyrano.gmu.edu>
 <1992Aug29.000004.26165@cello.hpl.hp.com>
 <1992Aug28.221733.15201@husc3.harvard.edu>
Date: Mon, 31 Aug 1992 08:47:52 GMT
Lines: 26