Newsgroups: comp.multimedia
Path: utzoo!utgpu!tj
From: tj@gpu.utcs.utoronto.ca (Terry Jones)
Subject: Re: Dithering..
Message-ID: <1991Jun6.162838.20754@gpu.utcs.utoronto.ca>
Organization: UTCS Public Access
References: <arctngnt.1470@amiganet.chi.il.us> <2695@news.chips.com> <arctngnt.3254@amiganet.chi.il.us>
Distribution: na
Date: Thu, 6 Jun 1991 16:28:38 GMT

>Newspaper print is a VERY good example of
>dithering. Why pictures in newspapers appear to be grey, yes, is infact the
>size of the BLACK dots next to WHITE spaces.

Newspaper is halftoning which I would guess is a specialized case of
dithering. 

>Television is a VERY good example of dithering as well.. If your TV screen
>was white, and you moved up real close to the TV screen, youde see a bunch of
>red green and blue dots..

Hmmm I'm not so sure this is a VERY good example of dithering. The spots
on a TV are analog and you are varying the intensity of the spots only
where most dithering is normally a variation of spot size and angle but
not the intensity.

When you simulate 16 million colors on an Amiga screen with the 4000 colours
available, you dither the colours you have to simulate more colours. Is this
then dithering the dithering?


>
>If youre TV screen was an aqua color. Youde lean up to the screen and see only
>blue and green dots.
>
>
>Think, bud. THINK.
>Arc


