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Article #342Re: Interpreting halftone screens to vectors: possible?
From: B_Roach
Date: Sun, 15 Aug 2004 19:27
Date: Sun, 15 Aug 2004 19:27
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Alex. Yeah, that's the way I've been doing it for years. But for a variety of reasons, I was hoping that there would be some way of achieving this without rasterizing. From what I could find on the 'Spot Function' and 'Halftone Screen', and the actual mechanics of postscript halftone screening (that is, of what I could understand), I would have thought that it would be possible to 'screen' to a scaled halftone dot as the output device interpreters do, but to an array of vector dots instead of a rasterized output (all the software import PS interpreters I've found: Adobe's AI, CorelDraw, and a few others) seem to have no access to reading or handling embedded halftone info in an PS or EPS file. The only thing that can do this, though not too intuitively, that I can find is an AI plugin called 'Vector Studio'. I can't help wonder if there isn't a way to do this more directly as an import filter-- it would make it a lot easier than having to reconstruct custom dots in Vector Studio. The routine used in web-page based app 'Rasterbator' to convert bitmaps into multi-page vector halftones, seems to accomplish this easily with Flash side code.... can the same be done with pure postscript? If you're curious to see what I'm talking about, Rasterbator is <http://homokaasu.org/rasterbator>
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X-Google-Thread: 10c61a,7921f6bb9af5e7d5 X-Google-Attributes: gid10c61a,public X-Google-Language: ENGLISH,ASCII-7-bit From: B_Roach@adobeforums.com Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!proxad.net!gatel-ffm!gatel-ffm!194.25.134.126.MISMATCH!newsfeed01.sul.t-online.de!t-online.de!webx Newsgroups: adobe.postscript.programming Subject: Re: Interpreting halftone screens to vectors: possible? Message-ID: <3bb57735.1@webx.la2eafNXanI> Date: Sun, 15 Aug 2004 12:27:16 -0700 References: <3bb57735.-1@webx.la2eafNXanI> <3bb57735.0@webx.la2eafNXanI> Lines: 23 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit