System and method for range measurement of a preceding vehicle

摘要

A system for determining range and lateral position of a vehicle is provided. The system includes a camera and a processor. The camera is configured to view a region of interest including the vehicle and generate an electrical image of the region. The processor is in electrical communication with the camera to receive the electrical image. The processor analyzes the image by identifying objects and determining a relationship corresponding to the expected pixel values at various locations on the road. The processor calculates a value indicative of the validity that an object is a vehicle by comparing the pixel values of the object with the expected pixel values based on the relationship. A score is determined based on the comparison indicating the likelihood that certain characteristics of the electrical image actually correspond to the vehicle.