| 摘要 |
<p>Processor of an inter-tail-light distance measurement apparatus of a succeeding vehicle (2) extracts images of left and right tail lights (11R, 11L) of a preceding vehicle (1) from an image taken by an image sensor (21), calculates a distance (La), in the image taken by the image sensor, between the extracted images of the left and right tail lights, and detects a time difference (td) between respective intensity variations over time of the extracted images of the left and right tail lights. Further, the processor calculates a distance (L) between the left and right tail lights (11R, 11L) of the preceding vehicle (1) on the basis of the time difference (td) between the intensity variations, and calculates a distance (d) to the preceding vehicle (1) on the basis of the distance (La) between the images of the tail lights and the distance (L) between the tail lights (11R, 11L).</p> |
