基于边缘检测的车牌定位方法

License plate location plays a critical role in the license plate recognition. The rate of location for the traditional technology in the night is generally lower than that in the day, which directly affects the rate of the segmentation and recognition. To solve this problem, this paper proposes a license plate location method of edge-based detection. We first highlight the regional characteristics of the license plate by detecting image edge, and then use the horizontal and vertical locating method to remove the fence or the front of the car headlights and other interference and accurately locate the plate area. Experiments show that the proposed method can accurately locate a license plate whether it’s day or night.