1. A method of processing an image, the method comprising: receiving, at a processor, image data associated with an image of a scene; detecting a road region based on the image data; determining a size of the road region; identifying at least a portion of the image data corresponding to the road region based on a comparison of the size of the road region to a threshold size; determining a subset of the image data, the subset excluding the at least a portion of the image data corresponding to the road region; and performing an object detection operation on the subset of the image data to detect an object, the object detection operation performed on the subset of the image data exclusive of the at least a portion of the image data corresponding to the road region.