基于离散多方向小波变换估计噪声能量的正则化虹膜图像恢复方法

基于离散多方向小波变换估计噪声能量的正则化虹膜图像恢复方法

左平¹,², 韩笑¹, 张禹³, 马驷良¹

1. 吉林大学数学研究所, 长春130012; 2. 空军航空大学基础部, 长春 130022;3. 吉林大学软件学院, 长春130012

收稿日期:2008-03-03 修回日期:1900-01-01 出版日期:2009-01-26 发布日期:2009-01-26
通讯作者: 马驷良

Regularized Iris Image Restoration Algorithm of Noise EnergyEstimation Based on Discrete Quadrature Direction Wavelet Tran

ZUO Ping¹,², HAN Xiao¹, ZHANG Yu³, MA Siliang¹

1. Institute of Mathematics, Jilin University, Changchun 130012, China;2. Department of Foundation, Aviation University of Air Force, Changchun 130022, China;3. College of Software, Jilin University, Changchun 130012, China

Received:2008-03-03 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26
Contact: MA Siliang

摘要/Abstract

摘要： 针对定焦虹膜采集设备采集的离焦降质虹膜图像, 提出一种基于正交离散多方向小波变换的正则化虹膜图像恢复算法, 并对提出的算法进行了系统检验. 结果表明, 所提出的改进算法对虹膜图像恢复的研究有一定的意义.

关键词: 离散方向小波, 虹膜图像, 噪声能量估计, 正则化恢复方

Abstract: This paper aims at the defocus descending iris image which is collected by the fixed focaliris collection equipment. Under this precondition, we proposed the regularized iris image restoration algorithm based on the discrete quadrature direction wavelet transform. The experiment data show that the improved algorithm has a certain theoretical and applicable value on the iris image restoration.

Key words: discrete quadrature direction wavelet, iris image, estimation of noise energy, regularized restoration algorithm

中图分类号:

TP391

左平,, 韩笑, 张禹, 马驷良. 基于离散多方向小波变换估计噪声能量的正则化虹膜图像恢复方法[J]. J4, 2009, 47(01): 82-85.

ZUO Ping,, HAN Xiao, ZHANG Yu, MA Siliang. Regularized Iris Image Restoration Algorithm of Noise EnergyEstimation Based on Discrete Quadrature Direction Wavelet Tran[J]. J4, 2009, 47(01): 82-85.