pfuetz@zgdvda.UUCP (Matthias Pfuetzner) (10/11/89)
Hallo! I've gotten giffer.ttp for the ATARI from the comp.binaries.atari.st newsgroup. There Eric Gisin mentions Floyd-Steinberg dithering as one of the methods he uses (there are four available in this program) for converting color information to bw. My question now: Can anybody tell me some book or other literature where this Floyd-Steinberg dithering method is described? Any hint is highly appreciated. Thanks in advance, Sincerly Yours, Matthias Pfuetzner =============================================================================== || Matthias Pfuetzner || private: || || Zentrum fuer Graphische Datenverarbeitung || Matthias Pfuetzner || || Wilhelminenstrasse 7 || Lichtenbergstrasse 73 || || D-6100 Darmstadt || D-6100 Darmstadt || || Fed. Rep. of Germany || Fed. Rep. of Germany || || Tel.: +49 6151 1000-77 or -22 || Tel.: +49 6151 75717 || ||===========================================================================|| || BITNET: xbr1yd3u@ddathd21.bitnet || || UUCP : pfuetz@zgdvda.UUCP ...!uunet!mcvax!unido!zgdvda!pfuetz || =============================================================================== Es gibt Sachen, die sind so falsch, dass nicht einmal das Gegenteil wahr ist. Karl Krauss
jh34607@suntc.UUCP (john howell) (10/12/89)
In article <646@zgdvda.UUCP>, pfuetz@zgdvda.UUCP (Matthias Pfuetzner) writes: > Hallo! > > I've gotten giffer.ttp for the ATARI from the comp.binaries.atari.st > newsgroup. There Eric Gisin mentions Floyd-Steinberg dithering as one of > the methods he uses (there are four available in this program) for > converting color information to bw. > My question now: Can anybody tell me some book or other literature where > this Floyd-Steinberg dithering method is described? > > Any hint is highly appreciated. > > Thanks in advance, > Sincerly Yours, > Matthias Pfuetzner > The definitive reference for what you want to do is probably: Heckbert, P, "Color Image Quantization for Frame Buffer Display," COMPUTER GRAPHICS, Vol. 16, No. 3, July 1982. or you may want to look at my own incarnation of Heckbert's work: Howell, J., "Full Color PATRAN Images with a 256 Color Terminal," 1986 PATRAN USERS' CONFERENCE PROCEEDINGS. and to answer your question about the Floyd-Steinberg reference: Floyd, R. W. and Steinberg, L., "An Adaptive Algorithm for Spatial Gray Scale," SID 75, INT. SYMP. DIG. TECH. PAPERS, 1975. Happy Dithering. ======================================================================== John Howell uucp: uunet!suntc!jrh Deere & Company MCImail: 360-4047 Technical Center CompuServe: [76666,2505] 3300 River Drive FAX: (309)765-3807 Moline, IL 61265 Voice: (309)765-3784 ========================================================================
helman@isl.Stanford.EDU (Jim Helman) (10/13/89)
Here's the original article: Floyd, R. W. and Steinberg, L. "An Adaptive Algorithm for Spatial Gray Scale" Society for Information Display Proceeding of the SID, Volume 17/2, 2nd quarter 1976 Jim Helman Department of Applied Physics P.O. Box 10494 Stanford University Stanford, CA 94309 (jim@thrush.stanford.edu) (415) 723-4940 Jim Helman Department of Applied Physics P.O. Box 10494 Stanford University Stanford, CA 94309 (jim@thrush.stanford.edu) (415) 723-4940