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76 wiersze
3.4 KiB
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<!-- received="Wed Mar 18 15:56:43 1998 PST" -->
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<!-- sent="Wed, 18 Mar 1998 17:45:32 +0100 (MET)" -->
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<!-- name="Rogier Wolff" -->
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<!-- email="R.E.Wolff@BitWizard.nl" -->
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<!-- subject="Re: MicroTek scanner" -->
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<!-- id="199803181645.RAA01320@cave.BitWizard.nl" -->
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<!-- inreplyto="199803180919.KAA20536@zrt2.gfz-potsdam.de" -->
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<title>sane-devel: Re: MicroTek scanner</title>
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<h1>Re: MicroTek scanner</h1>
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<b>Rogier Wolff</b> (<a href="mailto:R.E.Wolff@BitWizard.nl"><i>R.E.Wolff@BitWizard.nl</i></a>)<br>
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<i>Wed, 18 Mar 1998 17:45:32 +0100 (MET)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#125">[ date ]</a><a href="index.html#125">[ thread ]</a><a href="subject.html#125">[ subject ]</a><a href="author.html#125">[ author ]</a>
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<li> <b>Next message:</b> <a href="0126.html">Bucher Christian: "epson via parallel"</a>
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<li> <b>Previous message:</b> <a href="0124.html">w1.rapp@von.ulm.de: "sane port to Unixware"</a>
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<li> <b>In reply to:</b> <a href="0117.html">Wolfgang Köhler: "Re: MicroTek scanner"</a>
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</ul>
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Wolfgang Kvhler wrote:<br>
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<i>> </i><br>
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<i>> </i><br>
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<i>> Many thanks for your detailed answer !</i><br>
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<i>> </i><br>
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<i>> Now I understand a little bit better what is going on in my scanner.</i><br>
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<i>> </i><br>
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<i>> Obviously it is the small buffer size, even in the case of grey-scale </i><br>
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<i>> scanning, that causes the drastic slow down when the scan width exceeds</i><br>
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<i>> a certain limit.</i><br>
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<i>> </i><br>
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<i>> BTW, would it be possible to split the image horizontally into</i><br>
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<i>> two (or more) narrower and scan these subsequently ?</i><br>
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<i>> </i><br>
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<i>> Or will this trick cause an little offset between the lines because the </i><br>
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<i>> vertical positioning is not absolutely the same ?</i><br>
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<p>
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As my scanner has a different problem (it has passed the place to scan<br>
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when I issue the next "give me the next bunch of data"), it backtracks<br>
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too. <br>
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<p>
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I'd expect small artifacts due to this. Not at all. The positioning<br>
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seems to be very good. <br>
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<p>
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If the number of bytes per second indeed goes down, I'd expect good<br>
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results from doing a two-pass scan..... (even if you've just put down<br>
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some money to get a single pass scanner instead of a three pass<br>
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one... ;-)<br>
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<p>
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Roger. <br>
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<p>
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<pre>
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--
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
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</pre>
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0126.html">Bucher Christian: "epson via parallel"</a>
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<li> <b>Previous message:</b> <a href="0124.html">w1.rapp@von.ulm.de: "sane port to Unixware"</a>
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<li> <b>In reply to:</b> <a href="0117.html">Wolfgang Köhler: "Re: MicroTek scanner"</a>
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