对图像的边缘点使用最小二乘法进行圆弧拟合，对图像轮廓进行多边形逼近，算法实用快速，可靠-The edges of the image point arc fitting using least squares method, the image contour polygon approximation algorithm practical fast, reliable

激光雷达数据采集或读取、显示、直线拟合、角点提取、圆弧拟合、位姿解算等-Lidar data acquisition or read display, fitting a straight line, corner extraction, arc fitting Pose solver