Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!oliveb!sun!falk
From: falk@sun.UUCP
Newsgroups: sci.physics,comp.graphics,comp.sys.ibm.pc
Subject: Re: Color questions
Message-ID: <20537@sun.uucp>
Date: Sat, 6-Jun-87 15:54:14 EDT
Article-I.D.: sun.20537
Posted: Sat Jun  6 15:54:14 1987
Date-Received: Sun, 7-Jun-87 10:24:22 EDT
References: <1937@druhi.ATT.COM> <725@bsu-cs.UUCP> <6861@mimsy.UUCP> <93@eps2.UUCP>
Distribution: comp
Organization: Sun Microsystems, Inc. - Mtn View, CA
Lines: 17
Xref: utgpu sci.physics:1521 comp.graphics:696 comp.sys.ibm.pc:4072
Summary: does anybody know how to convert RGB->CYMB?

In article <93@eps2.UUCP>, jon@eps2.UUCP (Jonathan Hue) writes:
> 
> No, Rahul is correct.  What you see in magazines usually begins as
> continuous tone art (photographs or transparencies) and are then
> scanned with a Hell or Crosfield laser scanner to produce four
> color separations (cyan, magenta, yellow and black) which look like
> pieces of black and white transparency film with halftone dots on
> them.


Here's a related question, does anybody know the conversion factors to
map colors in Red-Green-Blue space to Cyan-Yellow-Magenta-Black?  What
I would like to do is generate four images on a high-res laser printer
that can be used directly for printing; i.e. do the seperation in
software.

		-ed falk, falk@sun.com, sun!falk