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From: reggie@dinsdale.paradyne.com (George W. Leach)
Newsgroups: comp.cog-eng,comp.windows.x
Subject: Contrast from RGB (Again?)
Message-ID: <6709@pdn.paradyne.com>
Date: 27 Oct 89 17:08:06 GMT
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Reply-To: reggie@dinsdale.paradyne.com (George W. Leach)
Organization: AT&T Suncoast Division, Largo FL
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      Has anyone done any studies concerning color contrast with bitmapped
displays, eg. Suns, PCs, etc.....  What I am looking for is a way to compute
the contrast from RGB triplets for a given set of background and foreground
colors.  We realize that there are some problems with this due to not being
concerned with the distance from the screen that the operator is positioned,
the reflective nature of the surface of the screen, any light sources that
can cause reflected light, etc....  However, we should be able to make some
use of a contrast ratio between two given RGB triplets.


      I seem to recall a discussion of "Luminance from RGB" taking place
in the comp.windows.x newsgroup a while back.  However, I did not save
any of the articles from that discussion.  Perhaps someone else did?

Thanks,

George

George W. Leach					AT&T Paradyne 
(uunet|att)!pdn!reggie				Mail stop LG-133
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