Research and Implementation of License Plate Location Based on Histogram Division Method

摘要：

The license plate location is an essential process in the license plate recognition system,and the location algorithm affects the result of recognition directly.In view of vehicles image on different background and light densities,this paper presents a license plate location algorithm,which based on histogram division. At first,this method makes pretreatment on license plate image. The pretreatment mainly includes graying the image,detecting the edge on image using the Prewitt operator,removing some spots that influence location by the median filtering algorithm and taking binaryzation on image. Then,according to the characteristics of the abundant textures on the license plate,the histogram division for the image after pretreatment is adopted to finally locate the license plate region. A large number of experiments have proved that this algorithm has high accuracy rate,location speed and the good practical value.

关键词： License plate location.Histogram division Prewitt operator Edge detection.

作者: Jianxia Wang Guilong Gao Huili Yang

作者单位: College of Information Science & Engineering,Hebei University of Science and Technology,Hebei Shijiazhuang 050018,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 230-233

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）