Patent ID: 6578869
Filing Date: 2003-06-17
Classification: B60N,B60R,G06T

Abstract:
A vehicle occupant sensor apparatus comprising:an imager that collects an image of an occupant and that outputs a signal indicative of the collected image, the image having focus attributes, a focal plane associated with said imager being at a distance from said imager; a two-dimensional high pass filter operatively connected to the imager to provide a signal indicative of high frequency content of the imager signal; a multiple frame temporal filter operatively connected to the imager to provide a signal indicative of image size conveyed by the imager signal; and a position determination component operatively connected to said two-dimensional high pass filter and said multiple frame temporal filter to determine position of the occupant relative to the focal plane utilizing the signal indicative of high frequency content of the imager signal and the signal indicative of image size.