Ann-dimensional Clough-Tocher interpolant

Ann-dimensional Clough-Tocher interpolant
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安维 Clough-Tocher 插值

DOI:
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发表时间:
1987
期刊:
影响因子:
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通讯作者:
G. Farin
G. Farin
中科院分区:
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文献类型:
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作者:
A. Worsey;G. Farin

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我们考虑了C1插值的问题,在给定的顶点和中间边缘点的数据在Rn中镶嵌。给定的数据是顶点的位置和梯度信息,以及中边缘点的梯度信息。通过对每个单纯形进行适当的细分,我们展示了如何使用分段三次多项式来解决插值问题。细分过程是该方法的关键,本质上是归纳性的。它是从二维情况系统地建立起来的,其中使用了众所周知的Clough-Tocher元素的变体。
We consider the problem of C1 interpolation to data given at the vertices and mid-edge points of a tessellation in Rn. The given data are positional and gradient information at the vertices, together with the gradient at the mid-edge points. By subdividing eachn-simplex in an appropriate way, we show how to solve the interpolation problem using piecewise cubic polynomials. The subdivision process is the key to the method and is inductive in nature. It is systematically built up from the two-dimensional case where a variant of the well-known Clough-Tocher element is used.