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<TITLE>sane-devel: Re: Phantom 636cx and microtek2</TITLE>
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<META NAME="Author" CONTENT="Levente NOVAK (novak@jaguar.dote.hu)">
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<META NAME="Subject" CONTENT="Re: Phantom 636cx and microtek2">
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<H1>Re: Phantom 636cx and microtek2</H1>
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<STRONG>From:</STRONG> Levente NOVAK (<A HREF="mailto:novak@jaguar.dote.hu?Subject=Re:%20Phantom%20636cx%20and%20microtek2&In-Reply-To=<947382743.0008@hypermail.dummy>"><EM>novak@jaguar.dote.hu</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Jan 04 2000 - 00:27:47 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0016.html">marcel pol: "RE: opening the mustek SE12000P: is says a4s2 all over!"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0014.html">Petter Reinholdtsen: "CVS access to SANE unstable development version"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0030.html">Bernd Schroeder: "Re: Phantom 636cx and microtek2"</A>
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<HR NOSHADE><P>
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<P>
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Hi,
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<BR>
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<P>On Sun, 2 Jan 2000, Bernd Schroeder wrote:
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<BR>
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<P><EM>>
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</EM><BR>
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<EM>> > Finally, I discovered that while mirroring is solved for the
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</EM><BR>
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<EM>> > scanned image and the previews, there is a little problem
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</EM><BR>
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<EM>> > remaining: if the area to scan is at the upper left part of the
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</EM><BR>
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<EM>> > scanner's window, I have to mark the upper right part to have the
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</EM><BR>
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<EM>> > desired area scanned! So the selected area in xsane or xscanimage
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</EM><BR>
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<EM>> > is still mirrored while the image itself is not anymore. I
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</EM><BR>
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<EM>> > suppose the upper-left and lower-right coordinates which delimit
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</EM><BR>
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<EM>> > this area are not recalculated by the backend while the image and
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</EM><BR>
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<EM>> > the preview are mirrored.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Looks as if this scanning direction 'right to left' has more implications
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</EM><BR>
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<EM>> than its looks at first sight. I have uploaded a new version of the
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</EM><BR>
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<EM>> backend to
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> <A HREF="ftp://ftp.muc.de/people/bernds/mtek2/microtek2-pre0.9.020100.tar.gz">ftp://ftp.muc.de/people/bernds/mtek2/microtek2-pre0.9.020100.tar.gz</A> ,
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> which should at least fix this problem.
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</EM><BR>
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<EM>>
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</EM><BR>
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<P>I have tested the new backend, here is the report:
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<BR>
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<P>- mirroring is now OK even in the preview window
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<BR>
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<P>- when backend-calibration is on, there are still crashes. I discovered
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<BR>
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that these always occur if there was no preview scan with backend-
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<BR>
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calibration on, while (most of the time) there is no crash when I do
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<BR>
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a preview scan with calib on. I did not test the previous version
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<BR>
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(0.8), but I suppose it had to have the same behaviour.
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<BR>
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<P>- now something surprising: images scanned with calibration are
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<BR>
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worse than those scanned without, as they have a strong blue tint!
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<BR>
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Effectively, scanning a white sheet of paper and looking at the
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<BR>
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histograms shows that while R and G histograms are very close to
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<BR>
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each other, the blue histogram is markedly shifted towards brighter
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<BR>
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intensities. Without backend-calibration, the left-to-right order
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<BR>
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of the three histograms is different, but clearly there is no such
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<BR>
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a shift in respect to blue channel. I haven't had time to retest
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<BR>
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with previous backend release, but do not remember having a
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<BR>
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similar result with it. Did you change something inbetween?
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<BR>
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<P>Finally, I am very interested to know how did you trace the commands sent
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<BR>
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by the twain driver with scantest.exe? If I could do the same, maybe it
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<BR>
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would be easier to find what is the trick of the driver under Windows.
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<BR>
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Unfortunately, I was unable to get my scanner recognised with recent
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<BR>
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releases of WINE, while the version shipped with Debian Slink (2.1) did
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<BR>
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the job, but then scanimage.exe crashed right after. Maybe it is important
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<BR>
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to mention that I used Windows 3.1 (and the 16 bit version of the drivers
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<BR>
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and executables).
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<BR>
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<P>Levente
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<BR>
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<P><P><P><P><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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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Phantom%20636cx%20and%20microtek2&In-Reply-To=<947382743.0008@hypermail.dummy>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0016.html">marcel pol: "RE: opening the mustek SE12000P: is says a4s2 all over!"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0014.html">Petter Reinholdtsen: "CVS access to SANE unstable development version"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0030.html">Bernd Schroeder: "Re: Phantom 636cx and microtek2"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sat Jan 08 2000 - 17:52:23 PST</EM>
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