Path: utzoo!mnetor!uunet!husc6!uwvax!rutgers!ucla-cs!zen!ucbvax!decvax!decwrl!granite!jmd
From: jmd@granite.dec.com (John Danskin)
Newsgroups: comp.graphics
Subject: Re: RBG -> black & white ?
Message-ID: <171@granite.dec.com>
Date: 28 Dec 87 18:25:51 GMT
References: <22286@ucbvax.BERKELEY.EDU> <19483@bbn.COM>
Reply-To: jmd@granite.UUCP (John Danskin)
Organization: DEC Workstation Systems Engineering
Lines: 7

In article <19483@bbn.COM> cosell@bbn.com.UUCP (Bernie Cosell) writes:
>
>Luminance = .3Red + .59Green + .11Blue
>  [ref: Foley & Van Dam, exercise 17.7 -- does that equation appear
>   anywhere in the main text of the book??]

Page 613, the Y coomponent of the RGB to YIQ matrix.