A Novel Algorithm for Character Segmentation of Degraded License Plate Based on Prior Knowledge

摘要：

This work proposes a novel algorithm for character segmentation of degraded license plate based on prior knowledge.Firstly,this algorithm performs preprocessing on the license plate,such as size normalization,uneven illumination correction,contrast enhancement,incline correction and edge enhancement;then,locates the character segments according to the vertical projection and merges the character segments that belong to the same character or splits the wider character segment according to the prior knowledge;finally,segments the characters according to the number and the width of the character segments.This algorithm is more efficiency under the condition that the license plate images are degraded,such as declining,faded,distorted,fogged,etc,quality degradation license plate.

关键词： License plate character segmentation Incline correction Merge characters Split character Prior knowledge

作者: Xiaodan Jia Xinnian Wang Wenju Li Haijiao Wang

作者单位: Computer and Information Technology College Liaoning Normal University Dalian,Liaoning Province,Chin Information Engineering College Dalian Maritime University Dalian,Liaoning Province,China,PRC Computer and Information Technology College Liaoning Normal University Dalian,Liaoning Province,Chin

会议类型: 国际会议

会议名称: 2007 IEEE International Conference on Automation and Lofistics

会议地点: 山东济南

会议语种:英文

在线出版日期: 2007-08-18（万方平台首次上网日期，不代表论文的发表时间）