基于三角网格的民族工艺品曲面重构技术  

Surface reconstruction of ethnic crafts based on triangular mesh

作　　者：张翠翠[1] 黄海松[1] 吕健[1] 

机构地区：[1]贵州大学教育部现代制造技术重点实验室,贵阳550003

出　　处：《计算机应用研究》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))

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.

关 键 词：民族工艺品 点云数据 三角剖分 BEZIER曲面 Coon曲面 插值 NURBS曲面 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]