Automatic correction of measurement position using robust matching in contact wire inspection system

In this paper, we propose automatic correction method of a contact wire measurement position by robust matching. One of the equipment for supplying electric power to a train has contact wire. By wear in the case of the electric supply to a train, contact wire has the feature of wearing out due to passage of the pantograph. Then, since surveillance was needed, we developed as a product the contact wire inspection system which used images. However, about the measurement position of contact wire, it depends on odometry etc., and the gap had arisen about the detailed position. The proposed method is comparing the stagger information on the measured contact wire with the wire stagger information on the past section, and rectifies a position gap.