基于轮廓线的三维网格曲面绘制  

Contour-based 3D mesh model sketching

作　　者：韩丽[1,2] 刘杰[1] 

机构地区：[1]辽宁师范大学计算机与信息技术学院,辽宁大连116029 [2]中国科学院数学与系统科学研究院数学机械化重点实验室,北京100190

出　　处：《计算机工程与设计》2010年第24期5302-5305,共4页Computer Engineering and Design

摘　　要：在融合了交互式轮廓绘制与网格造型技术的基础上,提出了一种快速三维网格曲面建模方法。根据绘制轮廓线的特征点分布,进行约束化三角网格剖分,提取二维轮廓线的骨架;选取骨架点和采样点投影到三维空间椭球曲面,并引入二面角原则,优化了空间离散数据点的三角化算法;最后缝合骨架点,获得三维网格曲面表示。实验结果表明了该算法的直观性、高效性。Combined the contour lines sketching and the mesh modeling technology,an efficient modeling approach is proposed.First,according to the distribution of the critical points on contour line,the constraint-based triangulation is implemented and the skeleton of contour lines is extracted.Furthermore,it projects the skeleton onto ellipsoid surfaces,and then it optimizes the triangulation algorithm from discrete points by adopting the rule of dihedral angel.Finally,the 3D mesh model is created by stitching the skeleton points.A series of experimental results verify the efficiency of this algorithm and robustness.

关 键 词：网格曲面 建模 骨架 椭球曲面 三角化 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]