NURBS细分曲线算法  

An Algorithm for NURBS Subdivision Curves

作　　者：丁永胜[1] 蒋大为[1] 张则剑[1] 章虎冬[1] 

机构地区：[1]西北工业大学理学院应用数学系

出　　处：《计算机工程与应用》2005年第16期74-76,93,共4页Computer Engineering and Applications

摘　　要：从基于差商算子定义B样条的角度,在对B样条基函数进行细分基础上提出了一种NURBS细分曲线算法,应用在自由型曲线生成和形状控制上具有良好的实际效果,完全具备了参数NURBS曲线的重要性质。最后给出了细分曲线生成圆及圆弧的实例。An algorithm for NURBS subdivision curves is first given.The algorithm based on the subdivision for the difference operator.It is very effective that applied the algorithm in the free curve fitting and shape controlling.The properties of the curves by this method are the same as which of the parameter NURBS curves.An example of generating circular arcs is given in the last.

关 键 词：NURBS 细分曲线 差商算子 权因子 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]