一种改进的指纹图像二值化处理方法  

An improved binarazation method for the fingerprint image

作　　者：田俊青[1] 徐荣青[1] 李亚玲[1] 姚晓宇[1] 

机构地区：[1]南京邮电大学光电工程学院,江苏南京210003

出　　处：《微型机与应用》2010年第18期52-55,共4页Microcomputer & Its Applications

摘　　要：提出了一种指纹图像二值化处理方法,该方法利用维纳滤波对原始图像进行预处理,然后采用连续块方向图计算指纹方向,结合方向信息用方向滤波模板对图像进行增强二值化。实验结果表明,该算法可以消除孔洞、去除粘线、粘连断线,二值化后的图像效果良好,脊线饱满平滑。This paper proposes a method for binarizing fingerprint image,which process the original image with Wiener filter. Then it calculate fingerprint direction with continuous block direction images,and enhance fingerprint images with orientation of filter templates.At Last it binarizes the image.The experimental results indicate that the presented algorithm can achieve good capability of repairing the disconnected line,eliminating the holes and removing crossed lines in the fingerprint images.

关 键 词：维纳滤波 连续方向图 二值化 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]