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总览 评价 王少慧 , 曹艳华 * ( 华北电力大学数理学院信息与计算研究所,北京 102206; ) 摘要: 本文从B样条曲线的定义出发,根据已知的型值点,采用均匀参数化法构造节点矢量,从而得到B样条基的具体表达形式;利用逼近思想构造出三对角矩阵,采用追赶
王少慧, 曹艳华*
(
华北电力大学数理学院信息与计算研究所,北京 102206; )
摘要:
本文从B样条曲线的定义出发,根据已知的型值点,采用均匀参数化法构造节点矢量,从而得到B样条基的具体表达形式;利用逼近思想构造出三对角矩阵,采用追赶法反求出控制点,最后拟合出所要求的曲线。数值实验和误差分析表明,该方法构造出的曲线能很好的满足项目要求,较好的应用于工程实践之中。
关键词:
B样条基函数;控制点;逼近思想;追赶法;数值实验;误差分析
WANG Shaohui, CAO Yanhua*
(
Institute of Information and Computation, Mathematics and Physics Department, North China Electric Power University, Beijing 102206; )
Abstract:
In this paper, starting from the definition of B spline curve,according to the known data points, the uniform parameterization method which is used to construct the knot vectors to obtain the specific forms of expression of B-spline basis . The tridiagonal matrix is constructed by using an approaching method, then all of the control points are calculated using the chasing method to fit the required curve finally. The final numerical experiments and error analysis reveal that this method constructing the curve to meet project requirements can be a very good good application in engineering practice.
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