[sane-devel] color problems on bright areas

Oliver Rauch oliver.rauch@rauch-domain.de
Mon, 10 Jun 2002 18:03:46 +0200

Hi John,

this is a problem of the gamma table of gtk that is used by xscanimage.
Disable the gamma table or use another program like xsane.


John Hunter schrieb:
> I have a SCSI Umax Astra1200 which I am using with sane/xscanimage.
> When I scan images that have bright white areas, the scan often comes
> out with those areas turned blue.  I have tried fiddling with custom
> gamma (click the gamma button and change the values from 1 to 1.2 or 1
> to 0.8) for image intensity and the various color intensities, but
> this doesn't fix the problem.  Are there other techniques someone can
> recommend to fix this problem.
> Here's a sample of an image I scanned today which has this problem:
> http://nitace.bsd.uchicago.edu:8080/summer/longshot.jpg
> Any advice will be much appreciated.  Thanks,
> John Hunter
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Homepage:	http://www.rauch-domain.de
sane-umax:	http://www.rauch-domain.de/sane-umax
xsane:		http://www.xsane.org
E-Mail:		mailto:Oliver.Rauch@rauch-domain.de