[sane-devel] Pixma driver for MG7550 produces stripes
martin.gu at intergga.ch
Tue Aug 18 22:47:53 UTC 2015
Thank you again for this clarification. I scanned the picture with the GIMP-
plugin, so there should not be any data loss. It seams that scangear improves
the image automatically, so I will try to accomplish this with GIMP.
Am Dienstag, 18. August 2015, 22.50:02 schrieb Rolf Bensch:
> Hi Martin,
> The backend isn't responsible for any artefacts, it handles the scanned
> data 1:1 to the saved image colour file. The Pixma backend only
> manipulates the images for grayscale and lineart (1 bit b/w) output formats.
> OK, there is some loss with image compression algorithms. If you have
> trouble with this, you should select lossless image formats.
> Maybe you should test different scan resolutions.
> Hope this helps.
> Am 18.08.2015 um 13:32 schrieb Martin:
> > I noticed diagonal stripes on some scanned pictures.
> > In order to verify that it is not on the picture but an artifact of sane
> > I scanned the same picture with Canon's scangear-progam on a
> > Windows-system. That picture does not have the stripes.
> > Please find the image scanned with xsane attached.
> > Cheers,
> > Martin
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