利用OPENCV函数库所进行的极坐标变换。利用Hough变换进行直线、圆检测。计算一副彩色图像的色度-饱和度直方图。用卡尔曼滤波器跟踪一个旋转点。-OPENCV library use conducted by polar transformation. The use of a straight-line Hough transform, circle detection. Calculating a color image of the color- saturation histogram. Kalman filter to track a rotating point.