中文说明：霍夫变换检测圆---主要用于图像处理。它是个很有用的方法，虽然用的时间比较长，但是检测效果还是很不错的。夫变换(Hough Transform) 霍夫变换是图像处理中从图像中识别几何形状的基本方法之一，应用很广泛，也有很多改进算法。主要用来从图像中分离出具有某种相同特征的几何形状（如，直线，圆等）。最基本的霍夫变换是从黑白图像中检测直线(线段)。
English Description：
Hough transform detection circle --- mainly used in image processing. It is a very useful method, although it takes a long time, but the detection effect is very good. Hough transform Hough transform is one of the basic methods to recognize geometric shapes from images in image processing. It is widely used and there are many improved algorithms. It is mainly used to separate geometric shapes (such as lines, circles, etc.) with the same features from images. The most basic Hough transform is to detect lines (line segments) from black and white images.