基于约束优化的NURBS曲线几何特征修改  

Modifying geometric features of NURBS curves via constrained optimization

作　　者：柳晓燕[1] 

机构地区：[1]西安邮电学院应用数理系,陕西西安710121

出　　处：《西安邮电学院学报》2007年第5期120-123,共4页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：研究了NURBS曲线几何特征的修改。基于约束优化,给出了采用最小二乘法修改NURBS曲线上给定点处的切矢、曲率等几何特征的方法。该方法可实现多种形状修改和变形效果,便于交互设计。The geometric features modification of NURBS curves are discussed in this paper. By means of constrained optimization, this paper uses the LSM （Least Square Method） to modify the geometric features such as tangency and curvature of the selected point on a NURBS curve. This method is very convenient for interactive, and can realize design and various shape modification effects.

关 键 词：NURBS曲线 约束优化 几何特征 形状修改 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]