“…The mesh smoothing techniques can be used to remove some false contours from a geometric point of view. These methods can be roughly categorized into two classes, including vertex based methods [FDCO03, JDD03, NISA06, LTJW07, HS13], and normal based methods [SRML07, ZFAT11, ZDZ*15, ZDH*18,LZFH18, YRP18]. The geometric quantities, such as vertices and normals, are taken into account, these methods seem better suited to the presented problem.…”