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Article #1466

Re: Dithering..

#1466
From: Brad May
Date: Tue, 04 Jun 1991 19:23
22 lines
1495 bytes
In article <arctngnt.1470@amiganet.chi.il.us> 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?)
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Message-ID: <2695@news.chips.com>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!daver!news.chips.com!bmay
References: <arctngnt.1470@amiganet.chi.il.us>

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Path: arc1-ca.pugleaf.net!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: <arctngnt.1470@amiganet.chi.il.us>
Organization: Chips and Technologies, San Jose, CA
Lines: 22