The method of iris matching is similar to a method computing the adopted city block distance, moreover according to the eyelid and eyelash's distribution, a matching template is used to reduce their disturbance to minimum. 特征匹配采用类似加权市街距离的方法来进行,而且根据眼睑和睫毛的分布特点设计匹配模板,能够最大限度的减少它们对匹配的干扰。