1. An imaging system for a vehicle, said imaging system comprising: an imaging array sensor comprising a plurality of photo-sensing pixels, wherein said imaging array sensor is positioned at a vehicle equipped with said imaging system and has a field of view exteriorly of the equipped vehicle, and wherein said imaging array sensor is operable to capture image data; a control for processing said captured image data; wherein, responsive to said processing of said captured image data, said control distinguishes an object present in the field of view of said imaging array sensor from a shadow present in the field of view of said imaging array sensor; and wherein, responsive at least in part to said processing of said captured image data, said control determines an object of interest present in the field of view of said imaging array sensor.