关键词: 虹膜识别, 特征提取, 2D Log-Gabor滤波器, 2D Log-Gabor奇对称滤波器

Abstract: When 2D Log-Gabor extracted iris features, part of them are non-effective. Aiming at solving this problem, a new algorithm using odd symmetry 2D Log-Gabor filter to extract iris feature was proposed. Based on the study of odd symmetry 2D Log-Gabor filter, this paper analyzed the phase position and amplitude of iris texture in different frequency and directions, and eliminated redundant feature by feature integration. This algorithm solves the defects of 2D Log-Gabor wavelet extract iris feature problem. The experimental results show that the odd symmetry 2D Log-Gabor filters have strong robustness with noise and interferences. This algorithm has high theoretical and practical value.

Key words: iris recognition, feature extraction, 2D Log-Gabor filter, odd symmetry 2D Log-Gabor filter