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<div class="moz-cite-prefix">On 07/26/2012 12:38 PM, Anton Marrast
wrote:<br>
</div>
<blockquote
cite="mid:CAJNEAaUpn1mTrUymtYYAaiK1VYmXDaoH+Nt-A4pQgN2pxNS5Yg@mail.gmail.com"
type="cite">Oh, thank you for the info, Stef.
<div>But when you say about lamp off option, you mean "<b
style="font-size:15px;text-align:left">--lamp-off-time number</b>"?
I thought this switches off the lamp when the scanner is not
scanning.<br>
</div>
</blockquote>
<br>
I meant the --lamp-off-scan which is available in the most
recent git sources (the upcoming 1.0.23).<br>
<br>
Regards,<br>
Stef<br>
<blockquote
cite="mid:CAJNEAaUpn1mTrUymtYYAaiK1VYmXDaoH+Nt-A4pQgN2pxNS5Yg@mail.gmail.com"
type="cite">
<div>
<br>
<div class="gmail_quote">2012/7/26 Stef <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:stef.dev@free.fr"
target="_blank">stef.dev@free.fr</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>On 07/22/2012 06:42 PM, Anton Marrast wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
I've found this old message about bypassing
calibration in LiDE 60<br>
<a moz-do-not-send="true"
href="http://lists.alioth.debian.org/pipermail/sane-devel/2008-December/023403.html"
target="_blank">http://lists.alioth.debian.org/pipermail/sane-devel/2008-December/023403.html</a><br>
<br>
I've tried to change genesys sourcecode but it's
really different now comparing to 2008 version.<br>
The thing is that i need to make my scanner work with
scannerlamp off (with the lens tray and transparent
plastic light transmitter are removed). Where should i
alter genesys sourcecodes?<br>
<br>
It's actually worked pretty fine with modified LiDE
110 using scanimage but last three days, all the scans
become messed up with extremely colouful stripes (in
color mode, and grey ones in grayscale). I've changed
the scanning sensor of the scanner (from another LiDE
110) and then compared the scans – the stripes were
totally identical, so it isn't the sensor.<br>
<br>
<br>
</blockquote>
</div>
</div>
Hello,<br>
<br>
bypassing calibration isn't a good idea, all the pixels in a
sensor don't give the same value given the same scanned
color. So you have scan a well known target (usually white),
and compute correction coefficients for each pixel based on
the scanned values. These are sent to the genesys chip so
you get good scanned data.<br>
<br>
Since it was asked frequently, I have added an option to
turn lamp off during scan, look at the man page. Calibration
is still done with lamp on. Maybe it could help.<br>
<br>
If you really don't want calibration, just add the
GENESYS_FLAG_NO_CALIBRATION flag to your device in
genesys_devices.c and recompile.<br>
<br>
Regards,<br>
Stef<br>
<br>
</blockquote>
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<br>
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