Embodiments of the present invention provide a system for determining a location of a tow hitch (280) mounted to a vehicle (250), comprising imaging means (260) disposed in relation to the vehicle to output image data corresponding to an image (105), and processing means (200, 210) arranged to receive the image data (270), wherein the processing means is arranged to select image data corresponding to a region (310) of the image and to search within the selected data for image data corresponding to the tow hitch (280) to determine the location of the tow hitch within the image.