| 摘要 |
An obstacle detecting portion (11) on a vehicle detects an obstacle behind the vehicle. A CPU (20) detects the direction of the driver's line of sight based on a driver's face image captured by a camera (12). The CPU (20) determines whether the direction of the driver's line of sight directed to mirrors (51L, 51R) reflecting an image of the obstacle behind the vehicle. According to the result of the determination, the CPU (20) sets the level of an alarm to be outputted by warning signal outputting portions (15, 16). |
