基于B样条的平面轮廓重构闭合曲面算法,应用了分段曲线拟合，效果不错-Based on B-spline closed surface plane contour reconstruction algorithms, the application of segmented curve fitting, good results

把辊子横轴分段，然后求取对应段的实际纵轴长度，然后画出样条拟合曲线-The roller transverse section, and then calculate the corresponding period of the actual length of the vertical axis, and then draw a spline curve fitting

利用matlab对曲线进行分段线性拟合,效果比较好-Use matlab piecewise linear approximation of the curve, the effect is better