Smooth Interpolation of Scattered Data by Local Thin Plate Splines

摘要

An algorithm and the corresponding computer program for solution of the scattered data interpolation problem is described. Given points (x(k),y(k),f(k), k = 1, ..., N a locally defined function F(x,y) which has the property F(x(k),y(k) = f(k), k = 1, ..., N is constructed. The algorithms is based on a weighted sum of locally defined thin plate splines, and yields an interpolation function which is differentiable. The program is available from the author. (Author)