基于Radon变换和HSV彩色模型的倾斜车牌校正  

License Plate Tilt Correction Algorithm Based on Radon Transform and HSV Color Space

作　　者：尚晓波 杨成忠[1] 王楠楠[1] 

机构地区：[1]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《工业控制计算机》2015年第4期116-117,共2页Industrial Control Computer

摘　　要：倾斜车牌校正是车牌识别系统中字符分割前的必要步骤。车牌的倾斜方式可以分为水平倾斜、垂直倾斜和混合倾斜。采用Radon变换来检测倾斜车牌的水平和垂直倾斜角,首先对倾斜车牌进行水平校正,然后基于HSV彩色模型对车牌区域颜色进行提取,进而去除非车牌区域的干扰,最后运用仿射变换对图像进行垂直校正。PIate tiIt correction in the License PIate Recognition System is a necessary step before the character segmentation.Li-cense pIate tiIt mode can be divided into horizontaI tiIt,verticaI tiIt and hybrid tiIt.Radon transform can be used to detect the horizontaI and verticaI tiIt angIe,the first step is horizontaI pIate tiIt correction,and then extract the coIor of the pIate based on HSV coIor space, at Iast, do the verticaI correction that is based on the affine transformation.

关 键 词：倾斜校正 RADON变换 HSV彩色模型 仿射变换 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]