Vehicle lane keep assist system

摘要

A lane keep assist system for a vehicle includes a forward facing camera and an image processor. The forward facing camera is disposed at a vehicle and has a forward field of view exterior of the vehicle. The image processor is operable to process image data captured by the forward facing camera. The lane keep assist system is operable to process image data to determine lane markers in the field of view and to determine a time to lane crossing value. The lane keep assist system determines a first time to lane crossing value via a first algorithm and a second time to lane crossing value via a second algorithm. The lane keep assist system is operable to apply a steering signal to adjust the steering of the vehicle at least in part responsive to the determined first and second time to lane crossing values.

主权项

1. A lane keep assist system for a vehicle, said lane keep assist system comprising:
a forward facing camera disposed at a vehicle and having a forward field of view exterior of the vehicle; an image processor operable to process image data captured by said forward facing camera; wherein said lane keep assist system is operable to process image data to determine lane markers in said field of view and to determine at least one time to lane crossing value; wherein said lane keep assist system is operable to determine a first time to lane crossing value via a first algorithm and a second time to lane crossing value via a second algorithm; wherein said first algorithm determines the first time to lane crossing value responsive to image processing of captured image data by said image processor; wherein said second algorithm determines the second time to lane crossing value responsive to signals from at least one other vehicle sensor; wherein said lane keep assist system is operable to apply a steering signal to adjust the steering of the vehicle at least in part responsive to the determined first and second time to lane crossing values; and wherein said lane keep assist system is operable to at least one of (i) combine said first and second time to lane crossing values to provide a more accurate estimation of the time to lane crossing and (ii) average said first and second time to lane crossing values to provide a more accurate estimation of the time to lane crossing.