Abstract
Collisions often occur because the area behind a car is not clearly visible in the dark. In this paper, we propose a system to measure the distance between the rear of the car and a target behind it in order to reduce the number of these accidents. Because it is expensive and time-consuming to develop new devices, this system uses a factory-installed monocular camera, brake light, and tail light that are installed beforehand. The light from the brake light and tail light diffuses, though, so with this system, we aim to extract the slit light from the distribution of the diffused light, and to apply a light-section method.
