Article View: comp.sys.atari.st
Article #1209Re: Falcon
From: Scott Willingham
Date: Tue, 07 Apr 1992 21:11
Date: Tue, 07 Apr 1992 21:11
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1616 bytes
In article <56761@cup.portal.com> Bob_BobR_Retelle@cup.portal.com writes:
>Marshall Lake asked:
>
>>What does "True Color" mean?
>
>"True Color" is a term used to describe 24bit color computer video.
>At that level of emulation of color (I don't remember the exact
>number of individual colors available with 24 bits, but it's
>extremely high... on the order of 99 gazillion..), the human eye
>no longer can tell the difference between the computer generated
>image and a "true" photographic image.
>
Eight bits per color is certainly as good or better than typical video
systems. Production quality video cameras (including HDTV types) typically
have a dynamic range of 40 to 50 dB in each color channel. High-quality
CRT and projection displays are little better. Eight bit channels have
a signal-to-noise ratio of 49 to 50 dB. Only very specialized systems
would need more than eight bits per color channel.
-- Scott Willingham // willing@icsl.ucla.edu
p.s. I suspect that "true color" refers to direct storage of RGB values
in video RAM as opposed to the use of color palette lookup tables.
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Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!ucla-cs!ucla-se!pantheon!willing From: willing@pantheon.icsl.ucla.edu (Scott Willingham) Newsgroups: comp.sys.atari.st Subject: Re: Falcon Message-ID: <6618@lee.SEAS.UCLA.EDU> Date: 7 Apr 92 21:11:32 GMT References: <1558@nikhefh.nikhef.nl> <1992Mar31.130356.3127@irscscm.UUCP> <56761@cup.portal.com> Sender: news@SEAS.UCLA.EDU Organization: University of California at Los Angeles, EE Dept. Lines: 34