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From: flip@osu-cgrg.UUCP
Newsgroups: comp.graphics
Subject: Re: Simple RGB to Gray scale question
Message-ID: <791@osu-cgrg.UUCP>
Date: Fri, 27-Feb-87 15:46:23 EST
Article-I.D.: osu-cgrg.791
Posted: Fri Feb 27 15:46:23 1987
Date-Received: Sun, 1-Mar-87 11:29:49 EST
References: <718@hp-sdd.HP.COM>
Organization: Computer Graphics Research Group, Columbus OH
Lines: 29
Keywords: The question is
Summary: and the solution is...

In article <718@hp-sdd.HP.COM>, nick@hp-sdd.HP.COM (Nick Flor) writes:
> 
> How does one convert a pixel defined by an R, G, B value into
> a single Gray level?
> 
> Gray = (R+G+B) / 3  ???
> 
> It seems like the R, G, B components should have different weights since
> I'm aware that the eye is less sensitive to blue light.
> 

and the mystery weights are:
 	
	0.30 red
	0.59 green
	0.11 blue

makes for beautyful flesh tones...

-- 

	Flip Phillips {ucbvax,decvax}!cbosg!osu-cgrg!flip
	Computer Graphics Research Group, The Ohio State University

	Delphi: FPHILLIPS
	USnail: 1501 Neil Ave.,  Columbus, OH 43201

	"All I wanted was a Pepsi, and she wouldn't give it to me."
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