Patent ID: 6292111
Filing Date: 2001-09-18
Classification: G08G,H04N

Abstract:
A vehicle-applied rear-and-side monitoring system, said monitoring system being set on a first vehicle, comprising:an image taking means for taking an image of a rear-and-side road view of the first vehicle so as to obtain a road image every definite period of time;a monitoring area setting means for setting a monitoring area in the road image for monitoring a second vehicle;an optical flow detecting means for detecting an optical flow deriving from the second vehicle to be in the monitoring area in two serial road images so as to monitor a relative position between the first vehicle and the second vehicle; anda rudder angle detecting means for detecting a rudder angle of the first vehicle, said rudder angle indicating a turning direction of said first vehicle,wherein the monitoring area setting means sets the monitoring area inside or outside an area enclosed with lines connecting two lane marking positions, where two lane markings on both sides of a first vehicle running lane in the road image cross a periphery of the road image, to an infinity point in the road image, said infinity point corresponding to the rudder angle detected by the rudder angle detecting means.