plustek@linuxhacker.org

Hi,

On Saturday 20 December 2003 00:54, Alessandro Ronchi wrote:
> I've bought a canon lide 20 hoping for good linux support (as sane device
> page says) but I've got a lot of problems.

that's bad!

> Colors are not similar to the original, and I've seen that there's a way to
> increase gamma to get a more useful image. How can I do that?

Change the plustek.conf file:
option redGamma 1.0
option greenGamma 1.0
option blueGamma 1.0

to values > 1, probably 1.5 is a good value, I also saw 2.5...

> Is there any place where I can download a plustek.conf file that is suited
> perfectly for canon lide 20 scanner?

No.

>
> Another problem is that the scanner takes some seconds before scanning,
> with the carriage going up and down (with a bit noise), and then it scans
> the image. Can I do something to avoid that?

No, because this is needed for calbration. To avoid every time recalibration,
you can try the option:
option cacheCalData 1

> I'm using the latest unstable deb package of the backend, it must be the
> 0.46-test1, how can I get surely the backend version?

Hmmm, try SANE-1.0.13, this should work anyway.
To find out the version number, try:
export SANE_DEBUG_PLUSTEK=10 ; scanimage -L

In the first lines of the output you'll find the versions...

> Thanks in advance for your beautiful work.

You're welcome ;-)
I'll check that here on my 670 again....

Ciao,
  Gerhard

>
> > Hi!
> >
> > It seems you have found the way(tm) of how to deal with this kind of
> > canons scanners.
> >
> > Here is the result of what I get when I use the new drivers
> >
> > http://www.nn7.de/sane/linux-600dpi-orig.png
> > http://www.nn7.de/sane/linux-600dpi-high-gamma.png
> >
> > The first is just xsane scanned with no adjustments, the second with
> > increased gamma.
> >
> > Compared with the win-600dpi.jpg (see below) it is now very close and
> > really useful quality.
>
> -cut-