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<!-- received="Sun Jun 28 23:19:13 1998 PDT" -->
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<!-- sent="Mon, 29 Jun 1998 08:18:04 +0200" -->
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<!-- name="Christian Müller" -->
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<!-- email="Christian.Mueller@ezmd.hl.siemens.de" -->
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<!-- subject="Color Problems with SANE 0.73 and Microtek Scanmaker E6" -->
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<title>sane-devel: Color Problems with SANE 0.73 and Microtek Scanmaker E6</title>
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<h1>Color Problems with SANE 0.73 and Microtek Scanmaker E6</h1>
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<b>Christian Müller</b> (<a href="mailto:Christian.Mueller@ezmd.hl.siemens.de"><i>Christian.Mueller@ezmd.hl.siemens.de</i></a>)<br>
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<i>Mon, 29 Jun 1998 08:18:04 +0200</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#215">[ date ]</a><a href="index.html#215">[ thread ]</a><a href="subject.html#215">[ subject ]</a><a href="author.html#215">[ author ]</a>
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<li> <b>Next message:</b> <a href="0216.html">Holger Frahm: "Epson GT9500 on AIX 4.2.1"</a>
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<li> <b>Previous message:</b> <a href="0214.html">Systembetreiber: "Re: Problems with sane & AVA15xx"</a>
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</ul>
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Dear Sirs,<br>
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<p>
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I intend to use SANE for scanning in a linux network.<br>
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<p>
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Configuration and building of SANE was done according to the README file<br>
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and<br>
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proceeded without any errors. Kernel supports all kinds of SCSI devices.<br>
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Using SANE with the Adaptec 1502E card succeeded after removing the link<br>
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/dev/scanner and using /dev/sg0 instead. Former tries hang up after some<br>
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activity at the scanner (without any debugging information displayed,<br>
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even<br>
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with SANE_DEBUG_LEVEL and SANE_DEBUG_MICROTEK increased to 128). Tryouts<br>
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with an Adaptec 2940 controller on a 486/100MHz worked without problems<br>
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(same SANE revision, same Linux kernel).<br>
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Using the SANE daemon saned was possible, but hang up when scanning a 20<br>
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MB<br>
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image. I now use the rsh command, writing the image file to a NFS<br>
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mounted<br>
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directory.<br>
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<p>
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But after solving all other problems, I now have some color failure<br>
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which<br>
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depends on the coordinates of the scanned pixel (From right to left side<br>
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of<br>
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the scanned image the failure in the blue channel increases).<br>
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Using the Microtek TWAIN driver under Windows showed no problems - the<br>
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scanner itself seems to be okay. At this point I think I will need some<br>
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additional help from you. If it provides better information, I could<br>
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sent the image files of the scans under Windows and SANE to the<br>
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developer,<br>
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but they are too big to append to the mailing list.<br>
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Below I list my system configuration and the log of a SANE scan:<br>
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<p>
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The SANE machine's configuration:<br>
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<p>
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SuSE Linux distribution 4.2<br>
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Linux Kernel 2.0.0<br>
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386/25MHz with 8 MB RAM and 100 MB harddisk (30 MB swapspace)<br>
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(additional file space available on file server)<br>
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Adaptec 1502E SCSI host<br>
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Microtek Scanmaker E6<br>
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SANE 0.73<br>
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<p>
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contents of /proc/scsi/scsi:<br>
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<p>
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Attached devices: <br>
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Host: scsi0 Channel: 00 Id: 05 Lun: 00<br>
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Vendor: MICROTEK Model: ScanMaker E6 Rev: 1.40<br>
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Type: Scanner ANSI SCSI revision: 02<br>
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<p>
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The scan script:<br>
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<p>
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#!/bin/sh<br>
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export SANE_DEBUG_LEVEL=128<br>
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export SANE_DEBUG_MICROTEK=128<br>
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scanimage -d microtek:/dev/sg0 --mode Color --resolution 300 -l 0 -t 0<br>
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-x 178 -y 127 > $1.pnm<br>
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cjpeg -quality 100 $1.pnm > $1.jpg ; rm -f $1.pnm<br>
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<p>
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(Remark: Both, the PNM and the JPEG file contain wrong colors, it is no<br>
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problem<br>
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of image file format conversion)<br>
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<p>
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With kindest regards - Christian Mueller<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.mostang.com/sane/">http://www.mostang.com/sane/</a>
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</pre>
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<li> <b>Next message:</b> <a href="0216.html">Holger Frahm: "Epson GT9500 on AIX 4.2.1"</a>
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<li> <b>Previous message:</b> <a href="0214.html">Systembetreiber: "Re: Problems with sane & AVA15xx"</a>
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