US Patent 7459664 Image sensing system for a vehicle

An image sensing system for a vehicle includes an imaging sensor and a logic and control circuit. The imaging sensor comprises a two-dimensional array of light sensing photosensor elements formed on a semiconductor substrate and is disposed at an interior portion of the vehicle proximate the windshield of the vehicle and has a forward field of view to the exterior of the vehicle through an area of the windshield. The logic and control circuit comprises an image processor for processing image data derived from the imaging sensor. The logic and control circuit generates at least one control output. The image sensing system detects lane markers on a road being traveled by the vehicle and present in the field of view of the imaging sensor.