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.
出处
《电视技术》
北大核心
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)
关键词
车牌定位
边缘特征
数学形态学
车牌识别
图像处理
license plate locating
edge characteristics
mathematical morphology
LPR
image processing
