Raspicam_cv and Raspicam

[bocse]

Due to normalization, the images are underexposed and too dark, as shutter speed is limited to 33ms
case CV_CAP_PROP_EXPOSURE :
if ( _impl->getShutterSpeed() ==0 )
return -1;//auto
else return Scaler::scale (0,330000, 0,100, _impl->getShutterSpeed() ) ;
break;

[cedricve]

#2