用于虹膜特征提取的Gabor滤波器参数选取方法的研究

The parameter selection of Gabor filter for iris feature extraction

分析了Gabor滤波器各参数在纹理特征提取中的作用,建立起一套完整的适用于虹膜纹理特征提取的滤波器分析与参数选择方法。该方法通过纹理宽度确定Gabor滤波器的频率调制因子,再根据其它参数与频率调制因子的关系确定各参数取值。实验结果证明依据本文方法设计的滤波器组提取虹膜纹理特征效果好,可以达到比较高的识别率。

The effect of the parameters of Gabor filter for iris feature extraction is studied, and a method to analyze and design the parameters is proposed. In this method the frequency parameters can be selected according to the iris feature width,based on which other parameters can be determined. Experimental results using a Gabor filter with the designed parameters demonstrate that the proposed method can obtain high accuracy in iris recognition.