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
