simple-scan-team team mailing list archive

[2CV67 <891586@xxxxxxxxxxxxxxxxxx>]

"can you try: scanimage --x-resolution 600 --y-resolution 600 >
si-600-600.pnm etc"

Assuming that was for me, I tried it & added something.
Terminal transcript here & my comments below.

Terminal:

chris@Acer-desk:~$ scanimage --x-resolution 600 --y-resolution 600 > si-600-600.pnm
chris@Acer-desk:~$ scanimage --x-resolution 600 > si-600--.pnm
chris@Acer-desk:~$ scanimage --y-resolution 600 > si---600.pnm
chris@Acer-desk:~$ scanimage --resolution-bind=no --x-resolution 600 --y-resolution 600 > sinb-600-600.pnm
scanimage: unrecognized option '--resolution-bind=no'
chris@Acer-desk:~$ scanimage --x-resolution 150 --y-resolution 150 > si-150-150.pnm
scanimage: rounded value of x-resolution from 150 to 75
scanimage: rounded value of y-resolution from 150 to 100
chris@Acer-desk:~$ scanimage --x-resolution 600 --y-resolution 600 > si-600-600-2.pnm
chris@Acer-desk:~$ 

Comments:
Tests #1 & #2 & #3 produced results with size & shape consistent with 600dpi where specified & 300dpi elsewhere (107MB / 54MB / 54MB).
Interestingly, no terminal freezing with #1 & #2 but froze after #3.
In fact I see now that terminal does not permanently freeze - but it takes 3 minutes to get back to prompt!
No output with --resolution-bind=no.

I tried #5 with 150-150 which produced the message about rounded values and a result which was 75-100 (2.2MB).
#5 again caused terminal "freeze" which unfroze after 3 minutes...
#6 was just to recheck #1 & was OK with no freeze.

I am out of my depth here, but you seem to be on to something!

Thanks!

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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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