Manpages - sane-pieusb.5

Table of Contents


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


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


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 values.

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 !


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


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


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


The backend configuration file
The static library implementing this backend.
The shared library implementing this backend (present on systems that support dynamic loading).




Please send any information and bug-reports to:
Klaus Kämpf </>


The pieusb backend is based on work by Jan Vleeshouwers, Michael Rickmann, and Klaus Kämpf

Author: dt

Created: 2022-02-20 Sun 09:34