[sane-devel] Backend for plustek Opticbook 3600

[stef]

Le mercredi 3 février 2010 01:48:11, vous avez écrit :
> On 02/02/2010 05:29 AM, stef wrote:
...
> > 	Stef
> 
> Cheers for the advice again stef, I just added the half ccd flag and it
> sorted out the image as it should look. The only issue now is that the
> scan seems a little dark, again ill upload the latest scan to the
> website (http://sites.google.com/site/bez625/updates-1/update020210).
> For the time being ill work with git to make sure im developing in the
> correct way ;), if you have a suggestion on the brightness issue let me
> know. Also I played with the offset and gain a little and neither seem
> to make any difference. Not sure what that is about.
> 
> Chris
> 
	Hello,

	shading calibration will give you the extra brightness you need. Check you 
don't have the GENESYS_FLAG_NO_CALIBRATION flag set. You might also check the 
genesys_send_shading_coefficient() function, and use a target_code for your 
CCD higher than the one use for the CCD_CANONLIDE35 you must be using.
	I noticed that you haven't tune the RGB CCD line-distance correction, hence 
the color artifacts before black/white areas. You can tune it in 
genesys_devices.c the ld_shift_[rgb] entries.

Regards,
	Stef