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<!-- received="Thu Jun 4 11:08:42 1998 PDT" -->
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<!-- sent="Thu, 4 Jun 1998 14:07:50 -0400 (EDT)" -->
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<!-- name="Matto Marjanovic" -->
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<!-- email="maddog@mir.com" -->
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<!-- subject="Re: new UMAX-Patch available" -->
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<!-- id="m0yheQY-000JA8C@yoo-hoo.ai.mit.edu" -->
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<!-- inreplyto="new UMAX-Patch available" -->
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<title>sane-devel: Re: new UMAX-Patch available</title>
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<h1>Re: new UMAX-Patch available</h1>
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<b>Matto Marjanovic</b> (<a href="mailto:maddog@mir.com"><i>maddog@mir.com</i></a>)<br>
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<i>Thu, 4 Jun 1998 14:07:50 -0400 (EDT)</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#31">[ date ]</a><a href="index.html#31">[ thread ]</a><a href="subject.html#31">[ subject ]</a><a href="author.html#31">[ author ]</a>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0032.html">Shawn Rutledge: "Re: TWAIN support in JMF? (fwd)"</a>
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<li> <b>Previous message:</b> <a href="0030.html">Matto Marjanovic: "Re: no SANE devices found.."</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0060.html">Oliver.Rauch@Wolfsburg.DE: "Re: new UMAX-Patch available"</a>
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<li> <b>Reply:</b> <a href="0060.html">Oliver.Rauch@Wolfsburg.DE: "Re: new UMAX-Patch available"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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Date: Wed, 27 May 1998 07:59:50 +0200 (MET DST)<br>
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From: <a href="mailto:R.E.Wolff@BitWizard.nl">R.E.Wolff@BitWizard.nl</a> (Rogier Wolff)<br>
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<p>
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William L. Sebok wrote:<br>
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<i> > </i><br>
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<i> > <a href="mailto:Oliver.Rauch@Wolfsburg.DE">Oliver.Rauch@Wolfsburg.DE</a> says:</i><br>
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<i> > </i><br>
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<i> > > It looks like a white calibration table for each pixel of the ccd that</i><br>
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<i> > > is used for the requested scan. So - I think - if a CCD-pixel has an other</i><br>
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...<br>
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<i> > This sort of correction has to be done very carefully when one uses</i><br>
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<i> > a ccd camera for Astronomical purposes. It's called a "flat-field"</i><br>
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<i> > calibration and was often done by taking pictures of the inside of</i><br>
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...<br>
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<p>
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My scanner, the Tamarack 12000C, does this on its own whenever you tell<br>
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it to start scanning. Pain in the A**: It does this EVERY time you tell<br>
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it to scan, not just the first time during every session.<br>
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<p>
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<p>
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Is there any subtle command to tell it to not calibrate?<br>
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The Microtek(1) scanners have a bit you can set to force them to not<br>
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calibrate at the start of a scan. Of course, in Microtek-style, if <br>
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the scanner is not calibrated once to start with, it silently resets<br>
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itself and hangs the scsi bus....<br>
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<p>
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-matt m.<br>
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<p>
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<p>
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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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<!-- body="end" -->
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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="0032.html">Shawn Rutledge: "Re: TWAIN support in JMF? (fwd)"</a>
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<li> <b>Previous message:</b> <a href="0030.html">Matto Marjanovic: "Re: no SANE devices found.."</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0060.html">Oliver.Rauch@Wolfsburg.DE: "Re: new UMAX-Patch available"</a>
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<li> <b>Reply:</b> <a href="0060.html">Oliver.Rauch@Wolfsburg.DE: "Re: new UMAX-Patch available"</a>
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<!-- reply="end" -->
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</ul>
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