[comp.graphics] Standard Colors

hutch@sdcsvax.UCSD.EDU (Jim Hutchison) (09/15/87)

<>
According to some literature I recently got from Shima Seiki, they
employ the Munsell color system as a part of their paint system.

Munsell & Pantone colors are a set of standard colors used in printing &
publishing.  Beyond that things get a bit fuzzy.  Where should I look
to find out about how to calculate the color values?  YIQ,RGB,CYM,HLS,HSV
whatever, for my needs it will end up in RGB.  RGB is probably not a good
enough representation at 8 bits per primary, but it is what I have at hand.

Suggestions?  Helpful hints?  I have "heard" that they (either) may be a
licensed color set, in which case information on where to write would be
much appreciated.

Why does it matter?  Because this is what the people are used to working
with, and there is no good reason to presume that a perfectly good artist
should be distracted by discontinuity in the design system.

If the colors are designed as combinations of for example 16 or so basic
inks, than how perfect can one assume inks to be?  I do not mean perfect
in respect to RGB or even to there names (Magenta for instance :-), but
rather how nicely behaved will they be when I mix them?  The desire is not
to achieve the ideal, but rather the actual.

-- 
    Jim Hutchison   		UUCP:	{dcdwest,ucbvax}!sdcsvax!hutch
		    		ARPA:	Hutch@sdcsvax.ucsd.edu
Disclaimer:  I'm gone, really, away from my terminal, in the tub, honest.

brian@sdcsvax.UCSD.EDU (Brian Kantor) (09/16/87)

Munsell Color References:

"A Color Notation", by A. H. Munsell

"Book of Color",
	The Munsell Color Company
	2441 North Calvert St.
	Baltimore, MD 21218

CIE and Munsell equivalents are discussed in

Keegan, H.J, et al.  "Digital Reduction of Spectophotometric Data
to Munsell Renotations", Journal of the Optical Society of America,
Vol 48, p863 (1958)

Display of Munsell colors on an RGB CRT are discussed in

Meyer, Gary W and Donald Greenberg, "Perceptual Color Spaces for
Computer Graphics", in the 1980 SIGGRAPH procedings.

Enjoy.

	Brian Kantor	UCSD Computer Graphics Lab
			c/o B-028, La Jolla, CA 92093

eugene@pioneer.arpa (Eugene Miya N.) (09/16/87)

Let me add one more suggestion.  If you can find a used copy of
the Ishihara Test for Color Blindess, I recommend it.  It's
an interesting curosity (not too expensive), and it can engender
an appreciation for one's sight.

Added note on the colorized `Adams' scenes.  If you are local to
the Bay Area, I will gladly show and sell anyone my reshoots
(this in response to several inquires of availabilty).  I use them
in talks on climbing all the time.

From the Rock of Ages Home for Retired Hackers:

--eugene miya
  "Send mail, avoid follow-ups.  If enough, I'll summarize."
  {hplabs,hao,ihnp4,decwrl,allegra,tektronix,menlo70}!ames!aurora!eugene