指纹图像脊线提取

指纹图像脊线提取 Ridge Extraction of Fingerprint Image 刘勇 LIU Yong 1 first-author 晏蒲柳 YAN Puliu 1 郭成城 GUO Chengcheng 1 武汉大学电子信息学院,湖北,武汉,430072 武汉大学电子信息学院,湖北,武汉,430072 School of Electronic Information,Wuhan University School of Electronic Information,Wuhan University 在分析指纹纹线特点的基础上 ,提出了基于多窗口的区域方向图滤波法 该方法利用指纹图像的局部区域内纹线方向的一致性和区域间纹线方向的相关性 ,有效地确定了纹线的区域方向 ,解决了单窗口区域方向图法中存在的局部误判问题 ,进而实现了沿指纹纹线方向的滤波 ,提取出了指纹的脊线 Based on the analysis of the characteristic of fingerprint image,a new method of image filter based on multiwindow is given.By the consistent of local ridge orientation and the correlativity of neighboring area,produce the local orientatin effectively,avoid the local fault in the method of oriented filter based on singlewindow,and extract the fingerprint ridge.The new method is not sensitive to the offset and the rotation of fingerpriat imege,and easy to realize.\; 多窗口 区域方向性 滤波 multiwindow local orientation filter TP391.41 武汉市科技攻关项目!资助 （991 0 0 91 85G） 2001-01-01 2021-04-01 1