基于数学形态学和边缘特征的车牌定位算法  

An Algorithm for License Plate Locating Based on Mathematical Morphology and Edge Characteristics

作　　者：李波[1] 曾致远[1] 付祥胜[1] 

机构地区：[1]华中科技大学数字化工程与仿真中心,湖北武汉430074

出　　处：《电视技术》2005年第7期94-96,共3页Video Engineering

基　　金：教育部跨世纪优秀人才培养计划基金项目(项目编号:2003714)

摘　　要：车牌图像定位是自动车牌识别系统的关键步骤。根据车牌特征,首先经过图像预处理,然后进行数学形态学操作,并设计了一种简便的车牌区域搜索算法进行粗定位,最后根据字符边缘特征进行精定位。实验表明该方法定位时间较短,定位效果较好。Vehicle license plate locating is of vital importance in automatic LPR（license plate recognition） system. With the license plate feature, first, image preprocessing is adopted , which is then followed by mathematical morphology operations. Next, a simple license plate searching algorithm is designed to get coarse location. In the end , an exact location is obtained according to the characteristics of character edge. The results of the experiment show that the algorithm possesses advantages of fast locating speed and high percentage accuracy.

关 键 词：车牌定位 边缘特征 数学形态学 车牌识别 图像处理 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]