从最小平方估计的观点揭示了最小平方估计与Laplacian光顺算法之间的关联,并进一步提出了M-估计器在网格光顺中的应用,最后延伸胁估计器至二次加权的M-估计器,在抑制噪声的同时有效地保持了表面特征.在本质上,二次加权的M-估计器就是双向滤波器.
In this paper, the link between least-squares (LS) estimator and Laplacian smoothing method from the point of view of LS method is firstly disclosed. Further more, an M-estimator for mesh filtering is presented. At last, the M-estimator is extended to the re-weighted M-estimator to remove noise while preserving the surface feature efficiently. The re-weighted M-estimator is bilateral filtering in natural.