Halftoning algorithm (C code) needed

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#624

From: John Ens
Date: Mon, 04 Jan 1993 22:41

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My apologies if this is a FAQ ....

Could some kind soul point me to a halftoning algorithm (C code if
possible) for transforming a gray-scale image to a halftoned binary
bit map.  Since I'm working with my own image format, I don't need
any I/O code.

I currently have an algorithm which uses pre-defined dot patterns,
but I'm not satisfied with the results.  I'm interested in an adaptive
scheme where the dots are produced randomly, based on the input gray-scale
image and errors from neighbouring pixels.

Thanks in advance.

John Ens
ens@cs.sfu.ca

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Message-ID: <1993Jan4.224155.10755@cs.sfu.ca>

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Newsgroups: alt.graphics.pixutils,comp.graphics,alt.binaries.pictures.utilities
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!howland.reston.ans.net!paladin.american.edu!gatech!destroyer!cs.ubc.ca!fornax!ens
From: ens@cs.sfu.ca (John Ens)
Subject: Halftoning algorithm (C code) needed
Message-ID: <1993Jan4.224155.10755@cs.sfu.ca>
Keywords: Halftoning
Organization: CSS, Simon Fraser University, Burnaby, B.C., Canada
Date: Mon, 4 Jan 1993 22:41:55 GMT
Lines: 16