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一种有理插值曲线的保凸控制问题 被引量:8

Convexity Control of a Rational Interpolation Curves
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摘要 在给定的插值数据条件下,利用一种带参数的有理插值方法,通过调整插值函数中的参数,给出了插值曲线的保凸方法和该方法得以实现的充分必要条件。这种条件是对参数的简单的线性的不等式约束,容易在计算机辅助几何设计中得到实际应用;而在理论上,它将一般插值理论上的“插值函数关于插值条件的唯一性”演化为“插值函数关于插值条件和参数的唯一性”。给出的数值例子说明了这种方法的有效性。 A method is presented for controlling the convexity of interpolant curves. The sufficient and necessary conditions are derived for the interpolating curves to be convex or concave in the interpolating intervals. So for the given data the shape of the interpolating curve can be modified by selecting suitable parameters. Examples are given to show the effective of this method.
出处 《工程图学学报》 CSCD 北大核心 2005年第2期77-82,共6页 Journal of Engineering Graphics
基金 国家自然科学基金资助项目(10271067) 高校博士点基金资助项目(20020422022) 山东省自然科学基金资助项目(Y2002G17)
关键词 计算机应用 曲线设计 有理插值 保凸控制 computer applications curve design rational interpolation convexity control
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参考文献18

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