一种改进的虹膜边界定位算法  

An Improved Iris Boundary Location Algorithm

作　　者：汪良会[1] 刘安芝[1] 高广珠[1] 洪途 

机构地区：[1]国防科学技术大学电子科学与工程学院电子科学与技术系,湖南长沙410073

出　　处：《微计算机信息》2012年第6期155-157,154,共4页Control & Automation

摘　　要：虹膜边界定位是虹膜识别系统的重要组成部分,定位的速度、准确度和定位算法的鲁棒性至关重要。针对传统虹膜定位算法的不足,提出了一种改进的虹膜定位算法,充分利用虹膜图像的灰度分布特征,合理地设定相关参数,实现虹膜内边界和外边界快速准确的定位。实验结果表明,该算法与经典的虹膜定位算法相比,定位准确度更高,定位速度更快。Iris boundary location is an important part of iris recognition system. Accurate, speed of location and robustness of the location algorithm are key factors. In this paper, an improved method is proposed to make up for the deficiency of conventional location algorithm, using the gray distribution features of eye images, setting related parameters reasonably, completed the location of inner boundary and outer boundary. The experimental results demonstrate that the localization results of proposed algorithm are more accurate and rapid than any classical algorithm.

关 键 词：虹膜定位 虹膜图像 边缘检测 检测算子 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]