| 基于对称方向滤波的指纹图像二值化 |
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| 引用本文： | 贾哲,李临生,田启川,张永亮.基于对称方向滤波的指纹图像二值化[J].计算机应用,2008,28(Z1). |
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| 作者姓名： | 贾哲 李临生 田启川 张永亮 |
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| 作者单位： | 太原科技大学,电子信息工程学院,太原,030024 |
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| 基金项目： | 太原市大学生创业基金
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太原科技大学校科研和教改项目 |
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| 摘 要： | 提出了一种结合方向信息的背景分割算法,能简单有效地将指纹从背景区域分割出来.还提出了一种对称滤波模板算法,不仅使脊线和谷线清晰分离而且矫正了纹线的方向并使脊线向中心集中,最后使用动态阈值法得到指纹二值化图像.实验表明,该算法对不同质量的指纹图像,能有效地抑制噪声,得到平滑连接的二值图像.
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| 关 键 词： | 指纹 方向场 对称方向滤波 二值化 |
Fingerprint image binarization based on symmetrical orientation filter |
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| JIA Zhe,LI Lin-sheng,TIAN Qi-chuan,ZHANG Yong-liang.Fingerprint image binarization based on symmetrical orientation filter[J].journal of Computer Applications,2008,28(Z1). |
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| Authors: | JIA Zhe LI Lin-sheng TIAN Qi-chuan ZHANG Yong-liang |
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| Affiliation: | JIA Zhe,LI Lin-sheng,TIAN Qi-chuan,ZHANG Yong-liang (College of Electronic , Information Engineering,Taiyuan University of Science & Technology,Taiyuan Shanxi 030024,China) |
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| Abstract: | Firstly the background segmentation algorithm was proposed combined with direction field information.Fingerprint image and the background could be segregated simply and effectively.Then symmetrical filter templet algorithm was proposed which not only separated the ridge from the valley clearly but also rectified the orientations of the ridge and caused the ridge to be centralized.Finally the algorithm of dynamic threshold was used to obtain the binary fingerprint image.Experiment results show that the algor... |
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| Keywords: | fingerprint direction field symmetrical orientation filter binarization |
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