Extraction and tracking of the license plate using Hough transform and voted block matching

In recent years, the method of license plate tracking has been applied for obtaining the position of the nearby vehicles from a vehicle. In this paper, we propose a new method of license plate extracting and tracking from time sequential images taken by a video camera on a vehicle. For extracting and tracking the plate correctly, we use Hough transform and Voted Block Matching. This method enables the extracting and tracking even when the distance between the camera on the vehicle and the license plate of another vehicle is changing or the plate is occluded by some objects.