车牌字符分割与识别技术研究  

Research on technology of segmentation and recognition of license plate character

作　　者：姚文凤 甄彤[1] 吕宗旺[1] 祝玉华 李智慧[1] 桂便 郭平飞 YAO Wenfeng;ZHEN Tong;LÜ Zongwang;ZHU Yuhua;LI Zhihui;GUI Bian;GUO Pingfei(Henan University of Technology,Zhengzhou 450001,China;Yellow River Conservancy Technical Institute,Kaifeng 475004,China)

机构地区：[1]河南工业大学,河南郑州450001 [2]黄河水利职业技术学院,河南开封475004

出　　处：《现代电子技术》2020年第19期65-69,共5页Modern Electronics Technique

基　　金：国家重点研发项目(2018YFD0401404);国家重点研发项目(2017YFD0401004)。

摘　　要：由于在车牌识别过程中传统的垂直投影分割算法存在对字符的误分割问题,于是提出一种基于图像垂直投影特征分析和几何特征的字符分割算法,该算法通过字符的宽度以及字符间的间隔宽度,对传统垂直投影分割算法的分割过程进行限制,可有效解决对左右结构汉字的错误分割。实验结果表明,该分割算法可有效提升字符分割的准确率,对车牌的正确识别具有重要作用。In view that the traditional vertical projection segmentation algorithm has the problem of character missegmentation in the process of license plate recognition,a character segmentation algorithm based on the analysis of image vertical projection features and geometric features is proposed.In the algorithm,the segmentation process of the traditional vertical projection segmentation algorithm is regulated by the width of characters and the interval width between characters,which effectively eliminates the wrong segmentation of the Chinese characters with left and right structure.The experimental results show that the segmentation algorithm can effectively improve the accuracy of character segmentation.Therefore,it plays an important role in the recognition of license plates.

关 键 词：车牌定位 车牌矫正 字符分割 字符识别 RADON变换 垂直投影 

分 类 号：TN911.73-34[电子电信—通信与信息系统]