| 摘要 |
Every time a camera transmits a picked-up face image to an ECU, the ECU detects a face area from the transmitted face image, and corrects an exposure time so as to have brightness most appropriate to determine a facial direction and the condition of eyes at the detected face area. The corrected exposure time is notified to the camera, and the camera picks up an image of the face of a driver at the notified exposure time. Accordingly, the ECU analyzes a face image which is periodically picked up with the most appropriate brightness regardless of a change in an environment, and determines whether or not a driver is doing a hazardous driving.
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