三角网格大面积孔洞光顺修补算法的研究

Research on Smooth Filling Algorithm of Large Holes in Triangular Mesh Model

针对曲率变化复杂区域的大面积孔洞缺陷,提出一种基于曲面拟合的光顺孔洞修补算法。首先提取孔洞基本特征信息,基于孔洞边界直接填充修补;接着通过网格细分与优化,获得孔洞内部采样点;最后通过加权分点曲面拟合,调整采样点的空间位置。应用实例表明,该算法获得的修补网格质量高,能较好地逼近原始缺失曲面,且与周围原始网格光顺连接。

To large holes on the smooth holes filling algorithm achieved and hole was directly base area where d on surface curvature variation is filled according to its inside hole by mesh sub--division and optimization; g. First the basic boundary; then n complex,this paper presented a feature information of hole was ew sample points were acquired finally the position of every sample point was adjusted by its weighed surface fitting. Application examples prove that excellent repair mesh can be achieved by this algorithm. It well approximates the original surface and smoothly transits to the original neighbor mesh.