摘要
虹膜纹理的方向特征在虹膜识别中具有重要地位。利用2DGabor小波的方向选择性,对虹膜纹理的方向分布特性进行了分析,由分析结果发现:可供识别的虹膜纹理特征主要沿虹膜圆周方向分布,在此基础上提出单方向特征提取虹膜识别算法。实验表明,与多方向特征提取相比,只沿圆周方向对虹膜进行特征提取不仅编码短,而且识别效果更好。
Directions of iris texture play an important role in iris recognition.2-D Gabor transform is applied to analysis directions of iris texture.The results of the experiments show that the iris features for recognition distribute mainly along the circumferential direction and better recognition results can be obtained by extracting iris features only along circumferential direction than that along all directions.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第1期229-231,共3页
Computer Engineering and Applications
关键词
虹膜纹理
特征提取
GABOR变换
方向分布
iris texture
feature extraction
Gabor transform
direction distribution
