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From: misha@nsc.UUCP
Newsgroups: comp.graphics
Subject: N-bit greyscale to n-bit greyscale
Message-ID: <4231@nsc.nsc.com>
Date: Wed, 22-Apr-87 16:23:12 EST
Article-I.D.: nsc.4231
Posted: Wed Apr 22 16:23:12 1987
Date-Received: Fri, 24-Apr-87 03:52:20 EST
Organization: National Semiconductor, Sunnyvale
Lines: 32

Hello.
This subject was probably already discussed but I must have missed it then.
I am looking for a general purpose greyscale to greyscale conversion routine.

Example:
	I have a bitmap image with 8 bits per pixel.
	Now, I have a monochrome TTL monitor which requires 1 bit per pixel.
	I need to convert the 8-bit-pixel image to 1-bit-pixel image and
	still be able to distinguish original shapes and lines.

If there is a specific algorithm for such a situation it is wellcome.
Also, if there is a generic algorithm which can handle arbitrary
bits-per-pixel size conversion (i.e.:  7 to 2, 5 to 4, 2 to 6 ???),
it is very wellcome.
Thanks in advance.
--
		NAME:   Michael Umansky (misha)
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