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

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

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.

This paper aims at the defocus descending iris image which is collected by the fixed focal iris 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.