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Path: utzoo!dciem!nrcaer!cognos!geovision!alastair
From: alastair@geovision.UUCP (Alastair Mayer)
Newsgroups: comp.graphics
Subject: Re: Color conversion
Message-ID: <199@geovision.UUCP>
Date: Thu, 8-Oct-87 11:48:48 EDT
Article-I.D.: geovisio.199
Posted: Thu Oct  8 11:48:48 1987
Date-Received: Sun, 11-Oct-87 08:24:44 EDT
References: <337@ndmath.UUCP>
Reply-To: alastair@geovision.UUCP (Alastair Mayer)
Organization: Geovision Corporation, Ottawa, Canada
Lines: 18

In article <337@ndmath.UUCP> milo@ndmath.UUCP (Greg Corson) writes:
>Does anyone have a formulia for converting color from Red-Green-Blue to
>hue-saturation-intensity and back again?
>
>Greg Corson
>{pur-ee,rutgers,uunet}!iuvax!ndmath!milo


See Foley and Van Dam's _Fundamentals_of_Interactive_Computer_Graphics_
(Addison-Wesley, 1982. ISBN 0-201-14468-9).  The last chapter
discusses color models for raster graphics, and there are listings
(in Pascal) for two procedures to convert between Red-Green-Blue
and Hue-Saturation-Value (pp. 615,616).
-- 
 Alastair JW Mayer     BIX: al
                      UUCP: ...!utzoo!dciem!nrcaer!cognos!geovision!alastair

 "What we really need is a good 5-cent/gram launch vehicle."