摘要
结合贵州民族工艺品泥哨的曲面特征和现有曲面建模的特点,讨论了一种基于三角网格NURBS曲面重构的方法。首先在处理后的点云数据上进行Delaunay三角剖分,并重构出G1连续的Bezier曲面;通过三角域向矩形域的转换,完成各矩形区域的Coons曲面重构;最后插值Coons曲面,得到光滑拼接的NURBS曲面。这种方法将三角面重构的灵活性、准确性与四边域曲面重构的通用性相结合,应用于贵州民族工艺品的曲面重构,降低了重构曲面的最大偏差,提高了重构曲面的质量。
Combined the surface features of Guizhou＇s ethnic crafts clay whistle with existing surface modeling,this paper discussed a method of surface reconstruction based on triangular mesh NURBS.Firstly,the Delannay triangulation was done on the point cloud and the Bezier surface was reconstructed,which was G1 continuous.And then by transforming the triangular domain into the rectangular domain,it reconstructed the Coons surface for every rectangular domain.Finally,it would obtain a smooth stitching NURBS surfaces through interpolating Coons surfaces.This method combined the flexibility and accuracy of the triangular surface reconstruction and the generality of the rectangular surface reconstruction,and applied it in the surface reconstruction of the ethnic handicrafts of Guizhou.The proposed method effectively improves the accuracy and the quality of the surface reconstruction of the ethnic handicrafts.
出处
《计算机应用研究》
CSCD
北大核心
2014年第6期1906-1908,1917,共4页
Application Research of Computers
基金
国家科技支撑计划资助项目(2012BAH62F03
2012BAH62F01
2012BAF12B14
2012BAZD4317)
贵州大学引进人才科研项目合同(贵大人基合字([2012]009))
