1. An imaging system for a vehicle comprising: an imaging array sensor comprising a plurality of photo-sensing pixels, said imaging array sensor being positioned at the vehicle and having a field of view exteriorly of the vehicle, said imaging array sensor being operable to capture an image of a scene occurring exteriorly of the vehicle, said captured image comprising an image data set representative of the exterior scene; and a control for processing said captured image, said control algorithmically processing said image data set to a reduced image data set of said image data set, said control processing said reduced image data set to extract information from said reduced image data set, said control selecting said reduced image data set based on a steering angle of the vehicle.