The former is based on Color Segmentation, contrast to the iris detection methods from gray edge images, the accuracy increases consumedly.

• 为了能够精确地提取虹膜,本文提出了基于彩色图象分割的虹膜检测方法,相对于现有的基于灰度边缘的虹膜检测方法,精确度大大提高。