| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of impossibility of given an alarm early after detecting a pedestrian by an infrared ray camera at night due to the need of image-processing of all the pickup range of the camera that elongates processing time. SOLUTION: A lane marking on a road is picked up by a visible light camera, and ranges close to lane marking positions 9c and 9d are set as pedestrian searching ranges 12a and 12b. A range held by the lane marking positions 9c and 9d is set as a pedestrian searching range 13. For far places, a range 12c close to a detection limit distance of the lane marking position is set. As a pedestrian is picked up at night by the infrared ray camera, the pedestrian 10 and a window 11 of a building are detected. However, since the searching ranges 12a, 12b, 12c, and 13 are only set as subject to detection, the pedestrian 10 is detected, while the window 11 of the building is not detected. By thus setting the searching ranges only as subject to detection, image processing time becomes shorter, thereby early alarming becomes possible. |
