Too high a degree polynomial produces lower residuals, but at the expense of smoothness in the derivative. 一个很高次数的多项式会产生较低的残差，但却要破坏导数的光滑性。
Theoretical analysis and experimental results show that this algorithm improves a lot on veracity of shape recovering and smoothness and continuity of the curved face. 理论和实验证明，该算法在恢复形状的准确性和曲面的光滑性，连续性上有较大改进。
