用基本的循环语言实现Hough变换以及用这种方法检测图像中的直线。代码深刻体现了hough变化的思想，便于初学者理会图像处理工具箱中的函数。-The basic cycle language Hough transform as well as a straight line in the image is detected by this method. The code reflects the profound change in the thinking of the hough, th