Improved predictor-corrector real-time NURBS interpolation algorithm

被引：0
|
作者：
Liu N. [1 ]
Wang G. [1 ]
机构：
[1] School of Information Science and Technology, Jinan University, Guangzhou 510632, Guangdong
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2010年 / 38卷 / 01期
关键词：
Interpolation; NURBS curve; Predictor-corrector;
D O I：
10.3969/j.issn.1000-565X.2010.01.023
中图分类号：
学科分类号：
摘要：
As the current methods of two-order predictor in real-time NURBS interpolation process can not ensure the monotonicity of parameter u, the interpolation direction may reverse in some conditions, and the iterative interpolation process in the corner of NURBS curves is not always convergent. In order to solve these problems, this paper proposes a one-order predictor-corrector algorithm, in which a one-order prediction formula is used to calculate parameter u, and an iterative calculation is performed to obtain the coordinates of NURBS curves up till a satisfying interpolation precision. Test results show that the proposed algorithm ensures the monotonicity of parameter u in the interpolation process and eliminates the interpolation direction reverse, and that it is of a velocity precision as high as that of the two-order predictor though more iteration cycles are needed.
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页码：119 / 123+127
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