基于相对距离和角度的手指静脉识别方法

Finger vein recognition method based relative distance and angle

根据以静脉图像拓扑结构的本质特性,提出了一种新的手指静脉识别方法.首先对细修复后的手指静脉提取交叉点;然后计算这些交叉点之间的相对距离和交叉点连线产生的夹角;最后将这2种特征融合,进行手指静脉识别.该方法结合静脉自身特征,充分利用了拓扑结构的本质属性,无须定位,一定程度上克服了图像平移、旋转对识别结果的影响.实验结果表明:该方法能够快速准确地进行身份识别,具有实际应用价值.

According to the essential characters of the image topology, a finger vein recognition meth- od was proposed. The intersectant points from the repaired and thinned finger vein image were extracted. Then the relative distance between the intersection point and the angle produced by the intersection point connections were calculated. Finallythese two features were combined for finger vein recognition. This method combined with the self characteristics of finger vein which make full use of the essential attribute of the topology without location can effectively overcome the influence on the recognition results caused by image translation and rotation. The experimental results show that the identification fast and accurately can be achieved through the proposed method which has great practical value and prospect.