Detection conditions

Lighting : the face detection has been tested under office lightning conditions - ie, under 100 to 500 lux. If you feel that the detection is not running well, try to activate the camera auto gain - via the Telepathe interface - or try to manually adjust the camera contrast.
Size range for the detected faces:
Minimun : ~0.10 rad = 6.3 deg. It corresponds to ~45 pixels in a QVGA image

Maximum : ~0.40 rad = 23 deg. It corresponds to ~160 pixels in a QVGA image
Tilt : +/- 20 deg (0 deg corresponding to a face facing the camera)
Rotation in image plane : +/- 20 deg