本文在介绍虹膜识别系统基本原理的基础上，比较和分析了现有的较有影响的灰度及彩色虹膜定位算法及其缺点和不足，并提出改进方案。-In this paper, the basic principle of introducing the iris recognition system, comparison and analysis of the more influential grayColor iris localization algorithm and its hortcomings and