RELATIVE VELOCITY DETECTOR FOR VEHICLES TRAVELLING IN OTHER LANES
T Echigo · 1994
This paper describes a system that uses a video camera mounted on the roof of a moving car to measure the relative velocity of a vehicle traveling in another lane of the same highway. The algorithm can determine the relative velocity every 66 ms. Whether or not a moving vehicle exists in the camera image is determined by differentiating images in several small windows into successive fields. Each window independently outputs the relative velocity of a part of the moving vehicle. Thus, the relative velocity of the entire moving vehicle can be determined by clustering the outputs of multiple independent windows. (A) For the covering abstract see IRRD 868006.