利用线性Hough变换和Canny边缘探测得到的所输入虹膜图像上各点的坐标，最终通过归一化产生一个虹膜的特征模板。(The coordinates of each point on the iris image are obtained by using the linear Hough transform and the Canny edge detection. Finally, a feature template of the iris is generated by the norma