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96 wiersze
5.2 KiB
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<!-- received="Wed Aug 13 04:43:00 1997 MST" -->
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<!-- sent="Wed, 13 Aug 1997 13:17:52 +0200 (MET DST)" -->
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<!-- name="becka@sunserver1.rz.uni-duesseldorf.de" -->
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<!-- email="becka@sunserver1.rz.uni-duesseldorf.de" -->
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<!-- subject="Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color" -->
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<!-- id="m0wybR2-000BWVC@charon.beck-sw.de" -->
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<!-- inreplyto="199708071516.IAA14039@panda.mosberger" -->
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<title>sane-devel: Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color</title>
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<h1>Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color</h1>
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<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de"><i>becka@sunserver1.rz.uni-duesseldorf.de</i></a><br>
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<i>Wed, 13 Aug 1997 13:17:52 +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#58">[ date ]</a><a href="index.html#58">[ thread ]</a><a href="subject.html#58">[ subject ]</a><a href="author.html#58">[ author ]</a>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0059.html">Christophe Zwecker: "Re: libc prob with 0.62 solved, now gimp"</a>
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<li> <b>Previous message:</b> <a href="0057.html">Christophe Zwecker: "libc prob with 0.62 solved, now gimp"</a>
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<li> <b>In reply to:</b> <a href="0034.html">David Mosberger-Tang: "MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color Problem]"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0060.html">David Mosberger-Tang: "Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color"</a>
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<li> <b>Reply:</b> <a href="0060.html">David Mosberger-Tang: "Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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O.K. - now for the experiences when using --disable-ld-fix at ./configure time:<br>
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<p>
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<i>> - What version of SANE are you using?</i><br>
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0.62<br>
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<p>
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<i>> - How was SANE configured? Did you use the --disable-ld-fix option?</i><br>
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Yes. No other special options.<br>
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<p>
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<i>> - What SCSI adapter are you using?</i><br>
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NCR53c400 as last time. And the scanner is a MFS12000 with 1.00 FW.<br>
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<p>
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<i>> - Does grayscale scanning work fine at various resolutions and without</i><br>
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<i>> dropped lines (e.g., try to scan a diagonal line to detect dropped</i><br>
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<i>> lines). If not, does it work for certain resolutions or do other</i><br>
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<i>> settings (such as "force backtracking") affect the result?</i><br>
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No. No scanning at all works. The scanner locks after its three "calibration<br>
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moves" it makes at startup. The PC will still work, but the scanner process <br>
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will be left open and needs to be killed with -KILL.<br>
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<p>
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After setting back to the normal mode, I have checked the seldomly used <br>
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modes and found the following :<br>
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<p>
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- Color Lineart and Color Halftone have wrong colors. Brightness seems all <br>
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right, but color is wrong by far. Maybe the assignment of the color-planes<br>
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is wrong.(Don't waste too much time on that - who needs it ?)<br>
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- Halftone mode works fine, if a 0 pattern size is set. If you set a pattern,<br>
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it doesn't work right.<br>
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- The pattern vector does seem to have incorrect length constraints.<br>
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You can only set up to pattern-size values. pattern-size^2 should be the<br>
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correct limit.<br>
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- Pattern setting itself seems to work right except for the far too small<br>
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size.<br>
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<p>
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The halftoning mechanism works as follows :<br>
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<p>
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The image is scanned in grayscale-mode internally, but for each dot the <br>
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scanner has an individual threshold to decide it is black or white. This <br>
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threshold is in the halftoning matrix.<br>
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<p>
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Say we have a matrix of 1 3 and an all gray picture of value 3.5, we get<br>
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2 4<br>
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* * in the output. The downloaded matrix is repeated like a tile-pattern.<br>
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* -<br>
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<p>
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Ask if I haven't made myself clear. The default matrix ain't bad, but rolling <br>
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your own might be nice for some applications.<br>
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<p>
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CU,Andy<br>
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<p>
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<pre>
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--
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Andreas Beck | Email : <<a href="mailto:becka@sunserver1.rz.uni-duesseldorf.de">becka@sunserver1.rz.uni-duesseldorf.de</a>>
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======== GGI - The Right Thing To Do : <a href="http://synergy.foo.net/~ggi/">http://synergy.foo.net/~ggi/</a> ========
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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="0059.html">Christophe Zwecker: "Re: libc prob with 0.62 solved, now gimp"</a>
|
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<li> <b>Previous message:</b> <a href="0057.html">Christophe Zwecker: "libc prob with 0.62 solved, now gimp"</a>
|
|
<li> <b>In reply to:</b> <a href="0034.html">David Mosberger-Tang: "MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color Problem]"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0060.html">David Mosberger-Tang: "Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color"</a>
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<li> <b>Reply:</b> <a href="0060.html">David Mosberger-Tang: "Re: MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color"</a>
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<!-- reply="end" -->
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</ul>
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