牛顿迭代法的精度较高，但计算量大也最复杂，且不能直接得到最接近参考圆的圆心位置坐标；
The precision of Newton iterative method is the better, but its calculating quantity is large and complex, moreover it can't get coordinate of center of the best fitting reference circle.
截面最小二乘圆心在绝对坐标系内的位置是影响圆柱度形状误差大小的重要因素。
The position of the least square center for a cross section in the absolute coordinate system is an important factor that affects cylindrical form errors.
经图像标定、中值滤波、快速图像匹配等处理算法，获得偏心加注口的圆心坐标位置信息。
By image calibration, median filtering and fast pattern matching processing algorithms, the system acquires the position information of the coordinates of the center of the circle of eccentric sprue.
应用推荐