[sane-devel] Sane & calibration: help needed!

NM Lists mlists@paris.monnet.biz
Mon, 18 Apr 2005 19:12:43 +0200

No idea?

Le samedi 09 avril 2005 =C3=A0 01:54 +0200, NM Lists a =C3=A9crit :
> Hi all,
> When I scan through sane+xsane, the images on my Canon Lide20 show a
> calibration problem; the left side of the image is much clearer than th=
> right side. However, with the Canon drivers on Windows, after having hi=
> the "calibrate" button, said driver performs corrections so that such
> artifacts disappear.
> Here's an example, a scan of a plain grid paper with some handwriting o=
> it:
> Windows driver: http://maman.monnet.biz/~nico/xsane/Scan1.JPG
> Sane (xsane through gimp):
> http://maman.monnet.biz/~nico/xsane/result_xsane.jpg
> I looked hard but could'nt find a way to get sane to calibrate; as far
> as I can tell, "calibration" in the config files refer merely to
> page-wide adjustments (gamma, contrast, luminosity ..). In this case, i=
> needs to be done on a pixel column basis.
> Any idea on how to solve this?
> Thanks a lot!