摘要
针对IC卡压印字符的表面特征,边缘检测算子的选取并得到精准凹凸字符信息是图像处理的关键。利用Canny算子提取凹凸字符的边缘特征,并利用几种经典的边缘检测算子对Canny算子效果进行检验,得出Canny算子对卡片字符的边缘检测有相当好的结果。同时,根据字符图像的边缘检测结果,选取阈值参数对字符图像进行分割得到单个字符的二值化图像和灰度直方图。较传统的二值化分割方法相比,取得了满意效果。并提高了字符的识别率。
It is the key to image processing to select the appropriate edge detection operator and get the precision concavity and convex character information for the surface features of IC card concavity characters.The Canny operator is used to extract the edge features of bump characters.And through several classic edge detection operators to verify- the effect of Canny operator,verify that the Canny operator is an effective edge detection method.According to the edge detection results of the Canny operator,the threshold image is selected to segment the character image to obtain the histogram of the binafized image.Compared with the tradi- tional binarization method, the satistaetory results are obtained.And improve the recognition rate of characters.
作者
郑鹏
王雨
苑泽伟
ZHENG Peng;WANG Yu;YUAN Ze-wei(School of Mechanical Engineering,Shenyang University of Technology,Shenyang,Liaoning 110870)
出处
《计算技术与自动化》
2018年第3期118-121,共4页
Computing Technology and Automation
基金
辽宁省科技创新重大专项项目(2015106022)
