1. A system mountable in a motor vehicle, the system comprising: a camera; a processor configured to receive image data from the camera; wherein the camera includes a rolling shutter configured to capture said image data during a frame period and to read the image data into a plurality of image frames; a near infra-red illuminator configured to provide a near infra-red illumination cone in the field of view of the camera, wherein the near infrared illumination oscillates with an illumination period; and a synchronization mechanism configured to synchronize said illumination period to said frame period of said rolling shutter.