Table 2:
The distance and image limit of face detection.
Image size
Distance between face and IPCAM
Limit of face up angle
Limit of face down angle
Limit of face turn left angle
Limit of face turn right angle
640*480
<4.20 m
30°
15°
30°
30°
320*240
<2.25 m
30°
15°
30°
30°