Thread View: comp.os.ms-windows.programmer.misc
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3 total messages
Started by George Yefchak
Mon, 25 Jan 1993 17:37
RGB <--> HSL ???
Author: George Yefchak
Date: Mon, 25 Jan 1993 17:37
Date: Mon, 25 Jan 1993 17:37
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Where can I find routines to convert between the various color-mapping schemes, such as RGB, HSL, CMYK, etc.? Thanks! *********************************************************************** * George Yefchak Hewlett-Packard Laboratories* * Internet: yefchak@hpl.hp.com P.O.Box 10350 * * CompuServe: 73607,1625 Palo Alto, CA 94303-0867 * * AmericaOnline gyefchak@aol.com 415-857-4793 * * NOT SPEAKING FOR HP FAX 415-852-8502 * ***********************************************************************
Re: RGB <--> HSL ???
Author: Dave Jones
Date: Mon, 25 Jan 1993 20:48
Date: Mon, 25 Jan 1993 20:48
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George Yefchak (yefchak@hplabsz.hpl.hp.com) wrote: > Where can I find routines to convert between the various > color-mapping schemes, such as RGB, HSL, CMYK, etc.? > Thanks! > Look inside any recent book on color perception and reproduction. That's how I got mine: I just typed in the pseudo-code from a book as C. -- ||||||||||||||||||||||||||||||||||||||||Marketing is the business of selling || Honk if you like Einstein |||||||||||projects to management. ||------------------------------------------------------------------------ ||Dave Jones (dj@ekcolor.ssd.kodak.com)|Eastman Kodak Co. Rochester, NY |
Re: RGB <--> HSL ???
Author: Chris Marriott
Date: Tue, 26 Jan 1993 21:12
Date: Tue, 26 Jan 1993 21:12
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In article <1993Jan25.173722.5205@hplabsz.hpl.hp.com> yefchak@hplabsz.hpl.hp.com writes: >Where can I find routines to convert between the various >color-mapping schemes, such as RGB, HSL, CMYK, etc.? >Thanks! > >*********************************************************************** >* George Yefchak Hewlett-Packard Laboratories* >* Internet: yefchak@hpl.hp.com P.O.Box 10350 * >* CompuServe: 73607,1625 Palo Alto, CA 94303-0867 * >* AmericaOnline gyefchak@aol.com 415-857-4793 * >* NOT SPEAKING FOR HP FAX 415-852-8502 * >*********************************************************************** > The best book I know of for this is "Computer Graphics: Principles and Practice, 2nd edition" by Foley, van Dam, Feiner and Hughes. It has pages and pages of algorithms for RGB<->HLS, RGB<->CYMK, etc. It's not a cheap book, but it's worth it in my opinion. Best wishes, Chris -- -------------------------------------------------------------------------- | Chris Marriott | chris@chrism.demon.co.uk | | Warrington, UK | BIX: cmarriott | | | CIX: cmarriott | | Save the whales. Collect the whole set. | CompuServe: 100113,1140 | --------------------------------------------------------------------------
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