Path: utzoo!attcan!uunet!husc6!bbn!uwmcsd1!ig!agate!helios.ee.lbl.gov!nosc!ucsd!ucsdhub!hp-sdd!hplabs!well!sierch
From: sierch@well.UUCP (Michael Sierchio)
Newsgroups: comp.windows.x
Subject: Re: Colortable Issues
Message-ID: <6256@well.UUCP>
Date: 12 Jun 88 16:01:07 GMT
References: <1253@daisy.UUCP> <19880609130837.5.RWS@KILLINGTON.LCS.MIT.EDU>
Reply-To: sierch@well.UUCP (Michael Sierchio)
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 20


One solution would be for the server to make available a portion of the
colormap (say, some percent of the unused bins, good neighbor policy
requiring that no-one have the whole map). There exist algorithms
for mapping from one arbitrary set of colors to another, smaller set,
including some authored by yours truly (e-mail me if yer interested).

The client process would either permit the server to do the transform
on the image, or would be informed that it must do so -- If good results
are achieved by mapping from a real-world image of 1M colors to 256 colors,
It seems plausible that mapping from 256 to say, 16, could give quite good
results.  Probably not true for a CAD Line drawing, but then we get into
how server and client negotiate how much of the colormap the server is willing
to give the client, and at what "cost".

-- 
	Michael Sierchio @ SMALL SYSTEMS SOLUTIONS
	2733 Fulton St / Berkeley / CA / 94705     (415) 845-1755

	sierch@well.UUCP	{..ucbvax, etc...}!lll-crg!well!sierch