AXLE NUMBER MEASUREMENT DEVICE, AXLE NUMBER MEASUREMENT SYSTEM, AND AXLE NUMBER MEASUREMENT METHOD

摘要

An axle number measurement device (30) for measuring the number of axles of a vehicle (40) which travels on a road (50) is provided with: a first communication unit (31) that acquires a captured image (P1) including tires of the vehicle (40); a detection unit (33) that detects the tires from the captured image (P1); a second communication unit (32) that acquires a distance image (P2) including a plurality of first distances from a prescribed position to the tires and a plurality of second distances from a prescribed position to positions that are outside the tires in the captured image (P1) and are on the road (50) below the tires; and a measurement unit (34) that measures the number of axles supporting the tires in contact with the road (50) on the basis of continuity between the first and second distances arranged at positions from the tires to the outside of the tires.