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<TITLE>sane-devel: Re: Phantom 636cx and microtek2</TITLE>
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<META NAME="Author" CONTENT="Bernd Schroeder (bernd@aquila.muc.de)">
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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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<!-- received="Sun Jan 9 07:16:39 2000" -->
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<!-- name="Bernd Schroeder" -->
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<!-- subject="Re: Phantom 636cx and microtek2" -->
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<STRONG>From:</STRONG> Bernd Schroeder (<A HREF="mailto:bernd@aquila.muc.de?Subject=Re:%20Phantom%20636cx%20and%20microtek2&In-Reply-To=<20000109153140.3372.qmail@aquila.muc.de>"><EM>bernd@aquila.muc.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Jan 09 2000 - 07:29:10 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0031.html">Joerg Budweg: "Re: Mustek ES12000SP PLUS"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0029.html">Jochen Eisinger: "Re: musteka4s2"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0263.html">Levente NOVAK: "Re: Phantom 636cx and microtek2"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0263.html">Levente NOVAK: "Re: Phantom 636cx and microtek2"</A>
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<P>
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Hi,
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<BR>
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<P>On Tue, Jan 04, 2000 at 09:27:47AM +0100, Levente NOVAK wrote:
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<BR>
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<EM>> Hi,
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> On Sun, 2 Jan 2000, Bernd Schroeder wrote:
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</EM><BR>
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<EM>>
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</EM><BR>
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<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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<EM>>
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</EM><BR>
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<EM>> I have tested the new backend, here is the report:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> - mirroring is now OK even in the preview window
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> - when backend-calibration is on, there are still crashes. I discovered
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</EM><BR>
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<EM>> that these always occur if there was no preview scan with backend-
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</EM><BR>
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<EM>> calibration on, while (most of the time) there is no crash when I do
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</EM><BR>
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<EM>> a preview scan with calib on. I did not test the previous version
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</EM><BR>
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<EM>> (0.8), but I suppose it had to have the same behaviour.
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</EM><BR>
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<P>Sometimes the device indicates that no calibration is necessary, which is
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<BR>
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probably the reason why it does not always crash and is independent of
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<BR>
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whether it is a preview or normal scan.
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<BR>
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<P><EM>> - now something surprising: images scanned with calibration are
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</EM><BR>
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<EM>> worse than those scanned without, as they have a strong blue tint!
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</EM><BR>
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<EM>> Effectively, scanning a white sheet of paper and looking at the
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</EM><BR>
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<EM>> histograms shows that while R and G histograms are very close to
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</EM><BR>
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<EM>> each other, the blue histogram is markedly shifted towards brighter
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</EM><BR>
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<EM>> intensities. Without backend-calibration, the left-to-right order
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</EM><BR>
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<EM>> of the three histograms is different, but clearly there is no such
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</EM><BR>
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<EM>> a shift in respect to blue channel. I haven't had time to retest
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</EM><BR>
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<EM>> with previous backend release, but do not remember having a
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</EM><BR>
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<EM>> similar result with it. Did you change something inbetween?
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</EM><BR>
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<P>No, nothing, because as I wrote, at present I do not know how to
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<BR>
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change the behaviour.
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<BR>
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<P><EM>> Finally, I am very interested to know how did you trace the commands sent
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</EM><BR>
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<EM>> by the twain driver with scantest.exe? If I could do the same, maybe it
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</EM><BR>
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<EM>> would be easier to find what is the trick of the driver under Windows.
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</EM><BR>
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<EM>> Unfortunately, I was unable to get my scanner recognised with recent
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</EM><BR>
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<EM>> releases of WINE, while the version shipped with Debian Slink (2.1) did
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</EM><BR>
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<EM>> the job, but then scanimage.exe crashed right after. Maybe it is important
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</EM><BR>
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<EM>> to mention that I used Windows 3.1 (and the 16 bit version of the drivers
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</EM><BR>
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<P>No, I cannot tell you how get it working under wine. I just tried it,
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<BR>
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but the 16bit ASPI layer does not work for me. Normally it is sufficient
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<BR>
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to just call 'wine scantest' (plus tracing enabled).
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<BR>
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<P>Bernd
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<BR>
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<P><PRE>
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--
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Bernd Schroeder
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Email: mailto:<A HREF="mailto:bernd@aquila.muc.de?Subject=Re:%20Phantom%20636cx%20and%20microtek2&In-Reply-To=<20000109153140.3372.qmail@aquila.muc.de>">bernd@aquila.muc.de</A>
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PGP public key available: mailto:<A HREF="mailto:pgp@aquila.muc.de?Subject=Re:%20Phantom%20636cx%20and%20microtek2&In-Reply-To=<20000109153140.3372.qmail@aquila.muc.de>">pgp@aquila.muc.de</A> | Subject: send key
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<P>--
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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=<20000109153140.3372.qmail@aquila.muc.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0031.html">Joerg Budweg: "Re: Mustek ES12000SP PLUS"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0029.html">Jochen Eisinger: "Re: musteka4s2"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0263.html">Levente NOVAK: "Re: Phantom 636cx and microtek2"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0263.html">Levente NOVAK: "Re: Phantom 636cx and microtek2"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sun Jan 09 2000 - 07:17:08 PST</EM>
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