关键词: 启发式车牌定位算法, 图像金字塔, 统计特征, 车牌定位

Abstract: On the base of studying the existing license plate location algorithms, a new heuristic license plate location algorithm is proposed which is based on the statistical feature. The algorithm uses image pyramid to grade the image and then uses jumping feature to quantify the plate region’s intensive character feature. The method uses dynamic programming algorithm to calculate the statistical matrix. The range of the jumping feature which is got by prior experiments is used to select the candidate rectangles. According to the color feature, the license plate size feature, the characteristics’ number feature, etc, the final positioning result is got. A large number of experiments show that the method is accurate, efficient and can be better adapted to the environment.

Key words: heuristic license plate location algorithm, image pyramid, statistical feature, license plate location