关键词:车牌识别; 细化; 形状特征; 凹凸性; 弯曲度
Highperformance license plate recognition method based onshape feature of characters
HU Jinrong1, 2, ZHOU Jiliu1, WANG Ling2, ZHENG Xiuqing2
(1.College of Computer, Sichuan University, Chengdu 610064, China; 2.College of Computer Science, Sichuan Normal University, Chengdu 610068, China)
Abstract:This paper proposed a simple and highperformance method of license plate recognition, which based on the shape feature of characters: convex and concave, bending and intersection. It didn’t need the normalization, thinning and orientation correction to the characters. Preprocessing to characters increased the rejection rate and error rate of license plate recognition because of the distortion resulted by the thinning and orientation correction. Experiments show that this method can improve the recognition rate and speed rapidly.
Key words:license plate recognition; thinning; shape feature; convex and concave feature; bending......