曲线驱动的网格变形算法与应用  

Mesh Deformation Driven by Curves and Its Applications

作　　者：刘斌[1] 林俊义[1] 江开勇[1] 

机构地区：[1]华侨大学,泉州362021

出　　处：《中国机械工程》2010年第18期2218-2223,共6页China Mechanical Engineering

基　　金：福建省科技计划重点项目(2009H0032);福建省自然科学基金资助项目(E0810040)

摘　　要：提出了一种曲线驱动的网格变形方法并把其应用于鞋楦的设计系统。基于三角网格模型的拓扑邻接信息,快速提取截面轮廓曲线;由主曲率极值法提取模型特征点集,利用移动最小二乘法细化该点集并对其进行排序、稀疏,然后将细化后的点集拟合为B样条曲线。计算曲线上采样点与模型上的对应点,从而使曲线与模型相关联,通过交互编辑截面轮廓曲线或特征曲线等来实现鞋楦的再设计。最后给出了该方法在鞋楦CAD系统中的功能实现。A kind of mesh deformation method driven by curve was put forward and it was applied to shoe last design system.Based on topological neighborhood information of triangular mesh model,cross-section contour curve was extracted rapidly;feature point set was extracted by extreme value method of principal curvature,moving least-squares method was used to thin the point set and made it ordered and sparse to fit B-Spline curve.Through such as editing cross-section contour curve or feature curve interactively to make shoe last redesigned come true.Finally,it showed how the method apply to shoe last CAD system.

关 键 词：鞋楦 定制CAD 拉普拉斯网格变形 特征线 

分 类 号：TS943.26[轻工技术与工程—服装设计与工程]