霍夫变换是图像处理中识别几何形状的一种方法，在图像处理中有着广泛应用，霍夫变换不受图形旋转的影响，易于进行几何图形的快速变换。基于霍夫变换的改进方法也有很多，其中一个重要的方法是广义霍夫变换，可以用来检测任意形状的曲线。-Hough transform is a method of image processing to identify geometric shapes, with a wide range of applications in image processing, graphics Hough transform without the influence of rotation, easy to quickly transform geometry. Based on improved Hough transform methods, there are many, one important method is generalized Hough transform can be used to detect any shape curve.