sane-pieusb.5



sane-pieusb(5)           SANE Scanner Access Now Easy           sane-pieusb(5)


NAME

       sane-pieusb  -  SANE  backend  for  USB-connected  PIE  PowerSlide  and
       Reflecta DigitDia/CrystalScan/ProScan slide scanners


DESCRIPTION

       The sane-pieusb library implements a SANE  (Scanner  Access  Now  Easy)
       backend  that  provides  access to USB-connected PIE and Reflecta slide
       scanners.
       At present, the following scanners should work with this backend:

       Model:                    Status
       ------------------------- ------
       PIE PowerSlide 3600       Untested
       PIE PowerSlide 3650       Untested
       PIE PowerSlide 4000       Untested
       PIE PowerSlide 5000       Untested
       Reflecta CrystalScan 7200 Untested
       Reflecta ProScan 4000     Untested
       Reflecta ProScan 7200     Untested
       Reflecta DigitDia 3600    Untested
       Reflecta DigitDia 4000    Untested
       Reflecta DigitDia 5000    Untested
       Reflecta DigitDia 6000    Ok


MULTIPLE SLIDES

       Support for multiple slide scanners (like the  PowerSlide  or  DigitDia
       series)  is  done by auto-advancing ('Advance slide' setting) the slide
       after each scan.

       However, for best results, it is recommended to do a preview for  every
       slide  since  this sets gamma, brightness, and contrast to optimal val‐
       ues.

       Attention: SANE does not have an automatic landscape/portrait detection
       and  re-orientation  when scanning multiple slides. You have to put all
       slides into one orientation first !


DIRT REMOVAL

       If available, pieusb supports infrared scans  for  dirt  detection  and
       removal. This must be enabled via the 'Clean image' setting.


KNOWN PROBLEMS

       The  pieusb backend supports dirt removal based on infrared scan infor‐
       mation. Since SANE does not provide  post-processing  in  the  backend,
       pieusb  does  the scanning and dirt removal during the setup phase. The
       'scan' phase is only used to transfer the completed  image.   Therefore
       pieusb  does  not  multi-thread  making  a  typical  frontend appear as
       'blocked'. Also cancel requests are only honored between scans.


ENVIRONMENT

       SANE_DEBUG_PIEUSB
              If the library was compiled with  debug  support  enabled,  this
              environment  variable controls the debug level for this backend.
              E.g., a value of 128 requests all debug output  to  be  printed.
              Smaller levels reduce verbosity.

              level   debug output
              ------- ------------------------------
               0       nothing
               1       errors
               2       warnings & minor errors
               5       additional information
               7       SANE api calls
               9       backend functions
              11       scanner functions
              13       usb functions
              15       image buffer functions


FILES

       /etc/sane.d/pieusb.conf
              The backend configuration file

       /usr/lib64/sane/libsane-pieusb.a
              The static library implementing this backend.

       /usr/lib64/sane/libsane-pieusb.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).


SEE ALSO

       sane(7)


CONTACT AND BUG-REPORTS

       Please send any information and bug-reports to:
       Klaus Kmpf <kkaempf@suse.com>


AUTHORS

       The pieusb backend is based on work by Jan Vleeshouwers, Michael  Rick‐
       mann, and Klaus Kämpf

                                  10 Aug 2015                   sane-pieusb(5)

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