Re: Halftoning Algorithm

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#3722

From: Philip Gladstone
Date: Mon, 19 Nov 1990 16:56

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Can someone explain if it would be possible to add (say)
Floyd-Steinberg to a Postscript printer to provide greyscale support
rather than halftoning via a screen? 

My experiments in printing greyscale images using F-S look *really*
nice although you have to tune various aspects of the algorithm for
each particular printer. [It is also really slow as I compute each
device pixel on the host and then squirt it down a 9k6 bps line to the
printer!] It is unclear if it would go any faster if run on the
printer itself (if written in postscript) as it involves quite a lot
of manipulation for each pixel. 
--
Philip Gladstone      
Development Lab Europe 
Data General, Cambridge
England.  +44 223-67600

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!maverick.ksu.ksu.edu!rutgers!gatech!mcnc!rti!dg-rtp!bigben!bigben!philip
From: philip@beeblebrox.dle.dg.com (Philip Gladstone)
Newsgroups: comp.lang.postscript
Subject: Re: Halftoning Algorithm
Message-ID: <PHILIP.90Nov19115647@beeblebrox.dle.dg.com>
Date: 19 Nov 90 16:56:47 GMT
References: <3245@isaak.isa.de> <1990Nov18.225043.680@julius.cs.uiuc.edu>
Sender: usenet@dle.dg.com (Net News)
Organization: Data General, Development Lab Europe
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In-Reply-To: nelson@melodian.cs.uiuc.edu's message of 18 Nov 90 22:50:43 GMT

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