A new system and method for calibrating the field-of-view of a sensor that is
part
of a vehicle occupancy sensing system. Calibration is carried out by generating
an image of the vehicle interior and then identifying within the image at least
one distinctive feature of the vehicle interior. The location of the distinctive
feature(s) identified in the image are then compared to a set of reference points
for a plurality of different sensor positions. The presumed sensor position that
corresponds to the set of reference points that most closely match the location
of the identified distinctive feature(s) is then presumed to estimate the actual
position of the sensor.