%0 Journal Article %T A New Approach for Vehicle License Plate Locating from Color Image
彩色汽车图象牌照定位新方法 %A ZHANG Yin %A PAN Yun-he %A
张引 %A 潘云鹤 %J 中国图象图形学报 %D 2001 %I %X It is well known that locating vehicle license plate is a very difficult problem in the fields of image segmentation and ITS(Intelligent Transprotation System).At the present time,the study of vehicle license plate locating mainly focuses on gray images so that the result is affected easily by the presence of shadows and illumination.In this paper,a new color edge detector ColorPrewitt and a new approach of vehicle license plate locating ColorLP are presented,which fully exploit color information and other features of vehicle license plate.ColorPrewitt not only is simple,but also has superiority over traditional color edge detectors in dealing with color vehicle license plate images because it doesn't just simply operate on the individual three channels of color space.It shows that the license plate edges detected using ColorPrewitt are clear,integrated and easy to be separated form the background.ColorLP combines ColorPrewitt and region growing image segmentation technology with high locating ratio and good generality,which is applicable to locate license plates in cases of various backgrounds,positions and illumination. %K Color edge detector %K Area growth %K License plate location %K ITS
彩色边缘检测 %K 牌照识别 %K 智能交通系统 %K 汽车牌照定位 %K 模式识别 %K 计算机视觉 %K 彩色图象 %K 图象分割 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=31992EF6643A7CA2&yid=14E7EF987E4155E6&vid=B31275AF3241DB2D&iid=E158A972A605785F&sid=5F8BAECF36EB55E2&eid=389106FB36CA8332&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=37&reference_num=11