中文说明：代码基本上是用来分割出虹膜图像。虹膜包含许多不同的特征。这段代码是在matlab中实现的，用于提取虹膜特征，以便进行进一步的处理；
English Description：
the code is basically used to segment out an iris image. iris contains a number of different features. this code is imp,imented in matlab in order to extract iris features in order to carry out further processes.