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<!-- received="Thu May 15 00:49:09 1997 MST" -->
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<!-- sent="Thu, 15 May 1997 09:39:24 +0200 (MET DST)" -->
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<!-- name="Matthias Lautner" -->
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<!-- email="lautner@hoggle.syscomp.de" -->
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<!-- subject="Re: [patch] Re: sane-0.57 available" -->
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<!-- id="199705150739.JAA30562@hoggle.syscomp.de" -->
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<!-- inreplyto="199705141616.JAA15860@panda.mosberger" -->
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<title>sane-devel: Re: [patch] Re: sane-0.57 available</title>
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<h1>Re: [patch] Re: sane-0.57 available</h1>
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<b>Matthias Lautner</b> (<a href="mailto:lautner@hoggle.syscomp.de"><i>lautner@hoggle.syscomp.de</i></a>)<br>
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<i>Thu, 15 May 1997 09:39:24 +0200 (MET DST)</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#2">[ date ]</a><a href="index.html#2">[ thread ]</a><a href="subject.html#2">[ subject ]</a><a href="author.html#2">[ author ]</a>
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<li> <b>Next message:</b> <a href="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<li> <b>Previous message:</b> <a href="0001.html">David Mosberger-Tang: "Re: News from Mustek 600 II CD"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<li> <b>Reply:</b> <a href="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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Hi!<br>
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<p>
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First some technical data about my scanner:<br>
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The scanner is labeled MFS-12000CX<br>
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[mustek] attach: firmware revision 2.71<br>
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[mustek] attach: found Mustek scanner model MFS-12000CX (flatbed scanner), 3-pass<br>
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<p>
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I implemented the patch for contrast & brightness<br>
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Now the maximum range in the brightness controll of xscanimage is -36% .. 36%<br>
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and -84% .. 84% for contrast. Is this right?<br>
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<p>
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The brightness and contrast is still calculated wrong for 3-pass mustek<br>
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scanners.<br>
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The result ranges from 1 to 24, it should be 0 to 24.<br>
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change in function encode_percentage() in mustek.c<br>
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code = (int) ((value / quant) + 0.5) + 0x0c;<br>
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to<br>
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code = (int) ((value / quant) + 12.5);<br>
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<p>
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<p>
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The errors: "Failed to set value of option red-gamma-table: Device busy."<br>
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between the passes of a 3-pass scan originates in a call to <br>
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gsg_sync(dialog) in the function scan_start(void) in xscanimage.c.<br>
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It seems, that a redraw of the gamma tables send the gamma values to<br>
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the scanner (which doesn<73>t want to be disturbed while working.)<br>
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<p>
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<p>
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I enabled brightness and contrast in color mode. It works pretty!<br>
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<p>
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<p>
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The progress bar stops at each scan after about 90% and proceeds to 100%<br>
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on the next pass of a 3 pass scan. <br>
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The value of the bar is calculated right, but it is not updated on the screen.<br>
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<p>
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<p>
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My scanner manual says that there are 12 internal patterns for halftone<br>
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scanning. How can they be activated. Does anybody knows something about<br>
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the format of customized half-tone patterns?<br>
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<p>
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<p>
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greetings<br>
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<p>
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Matthias<br>
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------------------------------------------------------------------<br>
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Matthias Lautner email: <a href="mailto:m_lautner@syscomp.de">m_lautner@syscomp.de</a><br>
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Fa. SYSCOMP GmbH Augsburg, Germany phone: 0821 / 4201-139<br>
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Biochemische Dienstleistungen fax : 0821 / 4201-411<br>
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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.azstarnet.com/~axplinux/sane/">http://www.azstarnet.com/~axplinux/sane/</a>
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To unsubscribe: mail -s unsubscribe <a href="mailto:sane-devel-request@listserv.azstarnet.com">sane-devel-request@listserv.azstarnet.com</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="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<li> <b>Previous message:</b> <a href="0001.html">David Mosberger-Tang: "Re: News from Mustek 600 II CD"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<li> <b>Reply:</b> <a href="0003.html">David Mosberger-Tang: "Re: [patch] Re: sane-0.57 available"</a>
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<!-- reply="end" -->
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</ul>
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