SILHOUETTE VISION

APPARATUS AND INSTRUMENTS FOR VIDEO-BASED DETECTION AND CONTROL OF VEHICLES AND ROAD CONDITIONS ON ROADWAYS, NAMELY, VIDEO CAMERAS, VIDEO IMAGE DATA PROCESSORS, SURVEILLANCE SYSTEMS COMPRISED OF CAMERAS, SENSORS AND ASSOCIATED SIGNAL PROCESSING EQUIPMENT, NAMELY, A CIRCUIT COMPRISING A CENTRAL PROCESSING UNIT AND A MEMORY ON A PRINTED CIRCUIT BOARD; COMPUTERS AND CONTROLLERS FOR CONTROL OF TRAFFIC SIGNS AND SIGNALS, DETECTION OF LANE CHANGES BY VEHICLES AND DETECTION OF VEHICLES TRAVELING IN THE WRONG DIRECTION OR VEHICLES STOPPED ON THE ROADWAY; APPARATUS FOR CLASSIFYING VEHICLES BY HEIGHT ON THE ROADWAY AND FOR DETERMINING VOLUME OF TRAFFIC, AVERAGE SPEED OF VEHICLES AND PERCENT OF ROAD OCCUPANCY BY VEHICLES, NAMELY, A VEHICLE DETECTING SYSTEM COMPRISED OF CAMERAS, COMPUTER HARDWARE AND OPERATING SOFTWARE THEREFOR