simple-scan-team team mailing list archive

[2CV67 <891586@xxxxxxxxxxxxxxxxxx>]

"Is my theory consistent with your experiments, 2cv67?"

Probably, yes.

If I select 75/150/300/600/1200dpi then I get an identical result which
is probably 300dpi.

If I select 2400dpi then I get an error message "Failed to scan. Unable to start scan".
Presumably a memory limit somewhere?
No amount of cropping will change that - I suppose Simple Scan does it's cropping after scanning?

Back in Epson's iScan, then if I try to scan a complete uncropped scanner bed (like in Simple Scan) at 2400dpi then I also get an error message "Selected area is too large for this resolution. Reduce the selected area or resolution"
Because iScan works with a pre-scan > crop > scan method, then I can reduce the area to get a successful scan at 2400dpi, but it is less than 1/4 of the scanner bed size.
I didn't find the exact limit, but it was successful at 7480x10123px (11.1MB).

So yes - your theory seems to fit.

Congratulations for that!

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https://bugs.launchpad.net/bugs/891586

Title:
  Resolution control not working

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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