A new method of vehicle license plate location under complex scenes

摘要：

Vehicle license plate location is an important part of a license plate recognition system. This paper proposed a new location method for plate under complex scenes based on horizontal gradient and morphological operation. Firstly, borizontal gradient image was obtained by horizontal difference on the grayscale image. Secondly, an adaptive thresbold proposed in this paper was used to segment the gradient image. Then, the candidate vehicle license plates were detected by morphological and region operations. Finally, the result of the license plate location was decided by candidate plates searching according to the features of the plate region The experiments on 191 vehicle images that were taken under different illumination, weather and distance conditions show that the efficiency of the proposed algorithm is 96.34％.

关键词： horizontal gradient adaptive threshold morphology region operation

作者: Wei Pan Nafei Yang

作者单位: Information Engineering Institute Capital Normal University Beijing, China

会议类型: 国际会议

会议名称: The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)

会议地点: 沈阳

会议语种:英文

页码: 134-138

在线出版日期: 2010-03-27（万方平台首次上网日期，不代表论文的发表时间）