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基于方向场和频率场的指纹图像增强改进算法 被引量：4

Improved fingerprint image enhancement algorithm based on orientation field and frequency field
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摘要 在LINHong算法的基础之上,提出了一种新型改进算法。该算法利用区域直方图规范化预处理纹理,梯度法计算方向场,采用紧支径向基函数(CSRBF)对频率场进行插值估计,增加了可恢复区域。实验结果表明,提出的算法取得了良好的增强效果,对经典LINHong算法有较大改进。 An improved algorithm is presented based on the LINhong＇s algorithm. It will preprocess the texture using local-normalization, estimate orientation field using gradient method and interpolate the unestablished points in frequency fields using compactly supported radial basis functions （CSRBF） to increase the recoverable areas. The experimental results show that the method gains the good effect of fingerprint image enhancement and has a big improvement of LINHong＇ s algorithm.
作者 黄毅 鲁周迅 陆建华
机构地区 南京工业大学
出处 《计算机工程与设计》 CSCD 北大核心 2009年第7期1694-1696,1702,共4页 Computer Engineering and Design
关键词 自动指纹识别系统 指纹 图像增强 区域直方图规范化 紧支径向基函数 AFIS fingerprint image enhancement local-normalization CSRBF
分类号 TP391 [自动化与计算机技术—计算机应用技术]
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参考文献10

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共引文献13

同被引文献36

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引证文献4

二级引证文献3

计算机工程与设计
2009年 第7期

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