On 02/24/2010 10:33 AM, Pierre Willenbrock wrote: > stef schrieb: > >> Le mercredi 24 f?vrier 2010 03:00:16 Chris Berry, vous avez ?crit : >> >>> 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 >>> >>> >> Hello, >> >> judging from the 2 pictures, there is no black area to scan. You should >> then >> rather use the GENESYS_FLAG_DARK_WHITE_CALIBRATION (like the lide 35) flag >> instead of GENESYS_FLAG_DARK_CALIBRATION. The shading data will be taken from >> an all white area and black data will be inferred from the small black areas >> still in the picture. >> >> > GENESYS_FLAG_DARK_WHITE_CALIBRATION is just a way to scan the black and > white strip in one go. Chris, you should try to figure out if the > backend goes through genesys_dark_shading_calibration with > GENESYS_FLAG_DARK_CALIBRATION, and if so, why the lamp does not switch off. > > Regards, > Pierre > > Hi Pierre / Stef,
I was wondering the same thing but the lamp does indeed go off. I'm not sure why the scan is so light, I had no idea which area it was scanning from.... I have been playing with the dark_white calibration and i seem to be getting somewhere, here ( http://sites.google.com/site/bez625/updates-1/update240210lateron ) are some scans. Should I abandon the work with DARK_WHITE and see if I can fix the issue with DARK_CALIBRATION? Chris -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
