Inter-car distance detecting device for tracking a car running ahead.

摘要

This invention relates to an inter-car distance detecting device for tracking a car (5) running ahead and automatically setting a tracking window in a display screen. The inter-car distance detecting device has a pair of image sensors (4) which pick up the image of a car running ahead. A window setting section (12) sets a plurality of windows, so that the distances from objects contained in those windows are detected and a position of the car (5) running ahead is detected by means of comparing the distances corresponding to the windows which contain the car (5) running ahead and which do not contain it. Thereby, a position and a size of a tracking window is set in the display screen at the position of the car (5) running ahead thus detected. <IMAGE>