Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!daver!news.chips.com!bmay From: bmay@chips.com (Brad May) Newsgroups: comp.multimedia Subject: Re: Dithering.. Message-ID: <2695@news.chips.com> Date: 4 Jun 91 19:23:08 GMT References: Organization: Chips and Technologies, San Jose, CA Lines: 22 In article arctngnt@amiganet.chi.il.us (Bowie J Poag) writes: -> ->Dithering is how to make a shade of color from two or more seperate colors. ->For instance, pick up a newspaper.. Youll see that greys are NOT infaCt grey ->ink.. But rather black and white dots. This is an example of pretty simple ->dithering.. -> ->You can simulate green by putting a yellow pixel, and a blue pixel next to ->eachother... get up to your TV sometime, and look real close at it. All the ->colors you see are represented by differing amounts of red, green abd blue ->little lights. Every color in the spectrum is composed of differing amounts of ->red green and blue.. -> What you see on your newspaper is in fact halftoning, where gray shades are made up of black dots of varying size, aranged in a regular pattern called a "screen". TVs produce colors by a similar technique, modulating the luminosity of the RBG phoshor dots. Neither of these is an example of dithering. [...] -> ->Arc ->(Now, Whats quantifying? Even I dont know that one..Does it have room for ->Jell-O?)