| 基于最优模型残差的指纹方向校正法 |
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| 引用本文： | 陈为民,李见为,徐东霞,王旭初.基于最优模型残差的指纹方向校正法[J].光电工程,2006,33(8):26-31,84. |
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| 作者姓名： | 陈为民 李见为 徐东霞 王旭初 |
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| 作者单位： | 1. 重庆大学,国家教育部光电技术及系统重点实验室,重庆,400044;昆明大学,电子信息与机械工程系,云南,昆明,650118
2. 重庆大学,国家教育部光电技术及系统重点实验室,重庆,400044 |
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| 摘 要： | 指纹的方向信息是指纹图像处理中非常重要的信息，指纹方向场的获取以及校正直接影响指纹自动识别的性能。本文提出了一种基于指纹方向场数学模型的方向校正方法，根据指纹中的奇异点性质和分布，建立起与对应指纹方向场的最优方向场模型；然后，根据模型与实际指纹方向场的残差对指纹方向进行校正。由于算法利用指纹整体的拓扑信息对指纹噪声方向进行校正，具有很强的抗干扰能力，较适合劣质指纹图像处理。
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| 关 键 词： | 指纹识别 方向场 指纹模型 残差 |
| 文章编号： | 1003-501X（2006）08-0026-06 |
| 收稿时间： | 2005-09-16 |
| 修稿时间： | 2005-09-162005-11-21 |
Fingerprint orientation correction based on the optimal model residual error |
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| CHEN Wei-min,LI Jian-wei,XU Dong-xia,WANG Xu-chu.Fingerprint orientation correction based on the optimal model residual error[J].Opto-Electronic Engineering,2006,33(8):26-31,84. |
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| Authors: | CHEN Wei-min LI Jian-wei XU Dong-xia WANG Xu-chu |
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| Affiliation: | 1. Key Lab of Optoelectric Technique and System, Ministry of Education, Chongqing University, Chongqing 400044, China; 2. Department of Electronical Information and Mechanical Engineering, Kunming University, Kunming 650118, China |
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| Abstract: | Orientation information is very important in the fingerprint image processing. The estimation and correction of the orientation field affect the automatic fingerprint recognition directly. This paper proposed an algorithm of orientation correction based on the fingerprint mathematic model. First an optimal fingerprint model was established via the singular points and the coarse orientation field of the fingerprint image. Then an orientation correction was applied on the residual error of the model. As the global topological information is applied, the algorithm performs well in the noise resistant especially in the poor quality fingerprint images. |
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| Keywords: | Fingerprint recognition Orientation field Fingerprint model Residual error |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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