simple-scan-team team mailing list archive

[Michael Nagel <ubuntu@xxxxxxxxxxxxxxxxx>]

Robert Ancell wrote:
I'm not opposed to a patch getting simple-scan to use "x-resolution" and "y-resolution" if "resolution" does not exist or does not contain the requested resolution (though that seems like it should be considered a driver bug).

I do not think it has to be considered a driver bug.

As Olaf writes:
Indeed [Simple Scan] should [support independent x/y resolution]. As a matter of fact, the SANE API doesn't even
guarantee that you can use [the same resolution for x/y] :-) See section 4.5.2 of the [SANE] specification for details.

In practice most scanners do support at least some resolution with
identical x/y resolution, but it should not be taken for granted and the
independent solution should not be some feature request but considered
part of using the API properly.

It does not need to be fixed immediatly (because obviously it works
without a lot of times), but we should keep an eye on it...

-- 
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Scan Development Team, which is the registrant for Simple Scan.
https://bugs.launchpad.net/bugs/891586

Title:
  resolution control: setting x/y resolution independently

Status in Simple Scan:
  Triaged

Bug description:
  Details in my Ubuntu Forum thread: 
  http://ubuntuforums.org/showthread.php?t=1648771
  Quote:
  "Firstly - congratulations for Simple Scan, which lives up to its name admirably!
  Xsane is no doubt wonderfully competent, but far too complicated for casual use.
  But I am having a problem with Simple Scan, in that I can't seem to get selected resolutions to have any effect.
  A typical A4 mainly-text document I am playing with, ends up as:
  165K when scanned & saved as text pdf at 75/150/300 or 600dpi...
  1.5MB when scanned & saved as text jpg at 75-600dpi
  2.2MB when scanned & saved as photo pdf or jpg at 75-600dpi.
  My Epson V200 scanner allows normal resolution selection with Xsane or with Epson's iscan application.
  Thanks for any suggestions!" - unquote.

  I started that thread in December 2010 & still have the same problem today.
  As a summary - the resolution control has absolutely no effect on the results.
  No error messages (unless I try 2400dpi) & nothing in simple-scan --debug >simple-scan.log
  I now have Simple Scan 2.32.0.1-0Ubuntu2 in Ubuntu 11.04.
  The scanner is an Epson Perfection V200 Photo & has normal resolution selection in XSane & Iscan.
  Thanks!

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