摘要
针对虹膜识别系统中的伪虹膜攻击,提出一种基于多方向Gabor滤波的虹膜活体检测方法。该方法首先对目标图像进行预处理,然后对预处理后的虹膜图像进行多方向的Gabor滤波并求出特征区域上半部和下半部的熵值差;最后计算各个方向的差值和作为评判虹膜真伪的标准。实验表明,该方法能够有效地辨别真假虹膜。
Aiming at the fake iris attack in iris recognition system,an iris activity detection method based on multi-directional Gabor filter is proposed.The method first pre-processes the target image,then makes multi-directional Gabor filtering on the pre-processed iris image,and calculates the entropy difference of the upper and lower characteristic regions;At last,it calculates the difference in all directions and uses it as the criteria of the iris authentication.Experimental results show that this method can effectively distinguish the genuine and fake iris.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第11期137-138,184,共3页
Computer Applications and Software
基金
教育部"新世纪优秀人才支持计划"项目(NCET-06-0502)
南京航空航天大学科研基地创新创优基金(1005-XCA10028)
