| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy of determining an illegal vehicle.SOLUTION: A vehicle recognition device 16 comprises an illegal candidate vehicle detection unit 54, an extraction unit 56, and a determination unit 60. The illegal candidate vehicle detection unit 54 detects, as an illegal candidate vehicle, a vehicle for which front and rear number information do not match from number information in the front image of the vehicle and number information acquired from a rear image. The extraction unit 56 extracts the front and rear vehicle shapes of the illegal candidate vehicle from each of the captured front and rear images of the illegal candidate vehicle whose number information indicated on the front and rear number plates of the vehicle are different. The determination unit 60 calculates similarity between the extracted front and rear vehicle shapes of the illegal candidate vehicle and the front and rear vehicle shapes of a normal vehicle whose number information indicated on the front and rear number plates of the vehicle agree. Then, the determination unit 60 determines, on the basis of similarity, that the vehicle of the illegal candidate vehicle is an illegal vehicle when it can be assumed that the front and rear vehicle shapes of the illegal candidate vehicle and the front and rear vehicle shapes of the normal vehicle are almost identical.SELECTED DRAWING: Figure 2 |
