基于几何统计特征的印鉴自动识别算法 －－－文章-Based on the geometric characteristics of each automatic identification algorithm is based on the geometric characteristics of each algorithm for automatic identification article

Another advantage is that geometric properties of the curve are easily determined from a particular level set of the surface . For example, the normal vector for any point on the curve C is given by:

Efficient and Accurate At-a-Distance Iris Recognition Using Geometric Key-Based Iris Encoding(1)