Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!rutgers!uwvax!oddjob!hao!ames!oliveb!sun!pepper!cmcmanis
From: cmcmanis@pepper.UUCP
Newsgroups: comp.graphics
Subject: Re: reverse dithering
Message-ID: <34159@sun.uucp>
Date: Tue, 17-Nov-87 20:53:31 EST
Article-I.D.: sun.34159
Posted: Tue Nov 17 20:53:31 1987
Date-Received: Fri, 20-Nov-87 21:52:37 EST
References: <1525@ssc-vax.UUCP>
Sender: news@sun.uucp
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 11
Keywords: dithering, halftone, gray scale

In article <1525@ssc-vax.UUCP> dickey@ssc-vax.UUCP (Frederick J Dickey) writes:
>My question is the following: Given the image in the dithered form,
>is there any reasonable way of reconstructing the original gray scale
>image?

If you know the region of the dither (like 4 X 4 squares or something) you
can just average all of the pixels in the region and multiply that by the 
a normalizing factor.
--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.