基于二维正弦曲面滤波器的指纹图像增强算法研究

JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE)

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Research on fingerprint image enhancement algorithm based on twodimensional sine quadric surface filter

ZHAN Xiaosi ^1,2, YIN Yilong ^1*, MENG Xiangxu ¹, YANG Gongping ¹

1. School of Computer Science ＆ Technology, Shandong University, Jinan 250101,China;
2. School of Computer ＆ Information, Fuyang Normal College, Fuyang 236041, China

Received:2009-03-30 Revised:1900-01-01 Online:2009-04-16 Published:2009-04-16

Abstract

Abstract:

A twodimensional sine quadric surface model accord with the ridge gray distributing rule was designed, and a fingerprint enhancement algorithm was produced based on the model after analyzing the basic character of the fingerprint image. The experimental results indicated that the fingerprint enhancement algorithm had better connecting ability for broken ridges than the Gabor fingerprint enhancement algorithm. The algorithm can effectively improve the fingerprint image enhancement result and the accuracy of the minutiae extracting result.

Key words: fingerprint recognition, fingerprint enhancement, sine quadric surface, Gabor

CLC Number:

TP391

ZHAN Xiaosi ^1,2, YIN Yilong ^1*, MENG Xiangxu ¹, YANG Gongping ¹. Research on fingerprint image enhancement algorithm based on twodimensional sine quadric surface filter[J].JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 8-14.

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