Newsgroups: comp.graphics,sci.image.processing
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From: ajoec1@westminster.ac.uk (Adrian Ford)
Subject: Re: Color space FAQ
Message-ID: <D03D5p.1o6@westminster.ac.uk>
Organization: University of Westminster
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References: <graphics/colorspace-faq_785813006@rtfm.mit.edu> <e.howick.10.2ED92C27@irl.cri.nz>,<CzzMvH.1E7@bbc.co.uk> <3bfaq0$ggq@synapse.bms.com> <D02s0p.B54@bbc.co.uk>
Date: Wed, 30 Nov 1994 17:41:47 GMT
Lines: 39
Xref: glinda.oz.cs.cmu.edu comp.graphics:65300 sci.image.processing:11182

Alan Roberts (alanr@rd.bbc.co.uk) wrote:
: We thought of that, but there are significant errors in every section,
: most of the equations are misleading in that they use symbols in a non-
: standard way, he uses English in an idiomatic way that blurs meaning.

: We would have to post a completely new document. Strangely enough, that's
: exactly what we have done. Charles Poynton of Sun Microsystems has posted
: two background documents in Adobe PDF format, I have contributed to another
: document full of equations and maths with Adrian Ford and that is posted
: as well, but not here since BBC does not do such things.

: I haven't got the ftp sites to hand (I didn't post them), I'll try to get
: adrian to post their whereabouts.

The adobe PDF docs from Charles Poynton are both available from ...

elaine.crcg.edu in directory pub/doc/color

There is (in addition) an ascii doc which is mainly a list of equations
for colour transformation between different colour spaces, this is available
from ...

westminster.ac.uk in directory pub/itrg

I would recommend that anyone intereseted in colour and computers (&
digital tv) etc reads charle's docs and also follows up the refs given
in all three documents. Following the interest generated, I'll start to
post the ascii doc (probably abridged) on a regular basis along with the
reasons for avoiding the present `colour spaces faq'.

Any queries, post or mail.

Regards, Adrian

Adrian Ford, Imaging Technology Research Group
             University of Westminster, United Kingdom.
             +44 (0)171 911 5000 ext 2765, fax +44 (0)171 911 5127
             ajoec1@wmin.ac.uk
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