| 指纹图像预处理新方法 |
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| 引用本文： | 赵磊,杨路明,吴建辉.指纹图像预处理新方法[J].计算机应用,2007,27(4):929-931. |
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| 作者姓名： | 赵磊 杨路明 吴建辉 |
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| 作者单位： | 中南大学,信息科学与工程学院,湖南,长沙,410083;湖南大学,计算机与通信学院,湖南,长沙,410082 |
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| 摘 要： | 介绍并实现了一套完整的指纹图像预处理方法，通过剩余块处理和平滑方法改进了传统的指纹图像分割算法；使用方向匹配的方法对指纹图像方向块进行方向滤波完成图像增强；并除去细化后存在的短线和毛刺。该算法对Secugen指纹仪采集的图像和FVC2004数据库中的指纹图像进行实验，结果表明经过预处理后的指纹图像质量得到明显增强，方便进行细节特征提取。
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| 关 键 词： | 预处理 剩余块 方向滤波 增强 细化 |
| 文章编号： | 1001-9081（2007）04-0929-03 |
| 收稿时间： | 2006-10-24 |
| 修稿时间： | 2006-10-24 |
New preprocessing method for fingerprint images |
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| ZHAO Lei,YANG Lu-ming,WU Jian-hui.New preprocessing method for fingerprint images[J].journal of Computer Applications,2007,27(4):929-931. |
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| Authors: | ZHAO Lei YANG Lu-ming WU Jian-hui |
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| Affiliation: | 1. Institute of Information Science and Engineering, Central South University, Changsha Hunan 410083, China; 2. Institute of Computer and Communication, Hunan University, Changsha Hunan 410082, China |
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| Abstract: | A new full fingerprint preprocessing algorithm, which improves traditional fingerprint images segment algorithm by using residual block disposal and smoothing, was introduced, and an orientation-match method that filters orientation field to enhance images was proposed, which removes short line and spur after thinning. The performance of the algorithm has been evaluated by conducting experiments on fingerprint images in FVC2004 database. Experimental results show that the algorithm improves the quality of fingerprint image and makes it convenient for minutiae extraction. |
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| Keywords: | preprocess residual block orientation filtering enhance thinning |
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