| 利用三值模板模糊匹配进行手指静脉识别 |
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| 引用本文： | 陈刘奎,郑宏.利用三值模板模糊匹配进行手指静脉识别[J].武汉大学学报(信息科学版),2011(2). |
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| 作者姓名： | 陈刘奎 郑宏 |
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| 作者单位： | 重庆科技学院电气与信息工程学院;武汉大学电子信息学院; |
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| 基金项目： | 国家自然科学基金资助项目(40571102) |
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| 摘 要： | 针对静脉特征图像中静脉边缘和末梢模糊造成匹配困难的问题,提出了一种基于三值模板图像的模糊匹配方法。该方法将提取出的静脉特征图像分割为三值图像,值1代表目标区,0.5代表模糊区,0代表背景区。三值图像用于模板匹配时,计算模板间非0值区域之间的平均距离作为相似分数,分数越低,则模板越相似。该方法匹配能力强,不要求点与点之间的绝对位置匹配,对模糊的静脉边缘和末梢匹配具有较强的鲁棒性。对实验中采集的456张近红外手指静脉图像进行匹配,正确识别率达99.46%,表明本文方法是可行的和有效的。
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| 关 键 词： | 近红外手指静脉识别 三值模板 模糊匹配 |
Finger Vein Image Recognition Based on Tri-value Template Fuzzy Matching |
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| CHEN Liukui ZHENG Hong.Finger Vein Image Recognition Based on Tri-value Template Fuzzy Matching[J].Geomatics and Information Science of Wuhan University,2011(2). |
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| Authors: | CHEN Liukui ZHENG Hong |
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| Institution: | CHEN Liukui1 ZHENG Hong2(1 College of Electronic & Engineering,Chongqing University of Science & Technology,200 Xizheng Street,Chongqing 401331,China)(2 School of Electronic & Information,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | In order to reduce the effect of fuzzy edges and tips of vein feature image in the template matching,we present a tri-value template fuzzy match algorithm,which segments the vein feature image into three areas: subject area,fuzzy area and background area;compute the average distance between the non-background areas as the similarity score between the matching templates.It is robust against the fuzzy edges and tips by increase the distance norm to the fuzzy area.The recognition accuracy rate,99.46%,to 456 ne... |
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| Keywords: | infrared finger vein recognition tri-value template fuzzy matching |
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