[sane-devel] Backend for plustek Opticbook 3600

[Chris Berry]

Hey Stef,

I think I have sorted out the white shading data but the black is still 
a mystery. I have uploaded some files to the project site (here 
http://sites.google.com/site/bez625/updates-1/update240210 ) these are 
at shading lines set to 400 but for the scan to work even a little bit I 
needed to change the lines to 20 (this removes the light blue lines at 
the bottom of the white_shading.pnm).

As you will be able to see the black_shading400.pnm is all white, I have 
no idea how to alter this. You can see from the white_shading400.pnm the 
full calibration area so I am at a loss really. Have you encountered 
this problem before?

Thanks

Chris

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