Hello,
experimental genesys backend after checkin last updates is now close to
be finished for at least MD5345/MD6471 scanner:
- 50, 100, 150, 200, 300, 600 and 1200 dpi color and gray level
8 bits scans are working reliably
- is already usable in xsane for varoius scans at various dpi
Current issues I am currently aware are:
1 - quality image issues:
- pictures are a little too red
- seems gain should depend on exposure time
- picture are a little to dark
2 - USB issues:
- there are bandwidth issues that lead to backtracking at high
dpi scans
- usb read hangs sometimes when reading scan's data in
genesys_search_start_position() . It may be related to
anything, and is quite mysterious.
Features that are can be added quite easily:
- lineart scanning
- 16 bits scanning
- scan resolution where motor dpi is not a round factor of CCD dpi
such as 250, 350, 400, 450, ... genesys_shrunk_line is currently
buggy.
I'm about to start code cleanup so that the backend can head to
inclusion
in sane-backends. Which, I think shouldn't take a long time.
Regards,
Stef
