交通运输工程学报
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING
2004 Vol.4 No.2 P.107-110


采用分段分形维数识别车牌字符

Recognition of vehicle license character based on multi-fractal dimension

肖旺新  张雪  黄卫 

摘 要:研究了在小波多尺度分解情况下,采用分形维数描述车牌字符特征,并在分区情况下计算出典型车牌字符的分段分形维数.发现小波变换能获取丰富的车牌字符特征,采用分段分形维数描述车牌解决了单一维数描述车牌字符时,有些字符维数相差太小,导致阈值难以选取的问题.结果表明,小波分形方法是研究车牌字符识别的有效的新方法.
关键词:交通信息工程;车牌;字符识别;二次B样条小波;分段分形维数
分类号:U491.51  文献标识码:A

文章编号:1671-1637(2004)02-0107-04

作者简介:肖旺新(1975-),男,湖南邵阳人,东南大学博士研究生,从事交通图像处理与识别研究.
作者单位:肖旺新(嘉应学院,计算机系,广东,梅州,514015;东南大学,智能运输系统研究中心,江苏,南京,210096) 
     张雪(东南大学,计算机系,江苏,南京,210096) 
     黄卫(东南大学,智能运输系统研究中心,江苏,南京,210096) 

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收稿日期:2003年7月28日

出版日期:2004年6月1日