# Re: Latest sane CVS, Epson GT7000 and xsane

From: khk@khk.net
Date: Tue Jun 06 2000 - 18:19:36 PDT

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  On Tue, Jun 06, 2000 at 07:19:43AM -0000, khk@khk.net wrote:
  > Dave Hill <dave@minnie.demon.co.uk> said:
  >
  > > Hi
  > >
  > > I just upgraded my copy of sane to the latest CVS version (as of
  > > 2000/06/05) and I think I have found a problem.
  > >
  > > Using xsane, when I do a preview scan, the bottom of the image
  > > is truncated (shows as white).
  > >
  > > When I do a scan to a pnm file, the file is incomplete, Image
  > > Magick says "display: not enough pixels (out.pnm)." and Gimp
  > > is unable to load the image.
  > >
  > > If I use xscanimage, all is OK!
  >
  > [ ... ]
  >
  > > I presume that the problem is in the Epson backend - Karl,
  > > have you seen this problem?
  > >
  >
  > No, I have not. Otherwise I would not have uploaded the new
  > stuff to the CVS server. I am not using the PNM format to
  > store my images, if I use xsane directly (not as a Gimp
  > plugin) then I use TIFF.
  >
  > I'll check tonight if this shows up on my system as well.

  OK, I did check and you are right, there is something wrong.
  It does show up on my Perfection610, but the Perfection1200
  does fine. Also, when I store as TIFF then everything's fine.

  The effect on the Perfection610 is not a bug, it's a feature :-)
  Some background: This scanner does send the three color channels
  in the order it scans them - there is a shift between the three
  channels. I have to "re-shuffle" these lines to get rid of this
  shift. To get rid of some artifacts at the beginning and the end
  of the scan I have to modify the scan area. This works fine as
  long as there is room to increase the scan area: This is of course
  not possible when you are scanning the whole page.

  I do however not understand why this shows up with the GT-7000
  (If I remember correctly, this is the Perfection636). Do you
  have the SCSI or the USB version?

  Karl Heinz

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