Spline quasi-interpolation in the Bernstein basis and its application to digital elevation models

A nonstandard low-cost spline approximation method for approximating bivariate functions is constructed. It is applied for Digital Elevation approximation and then its accuracy in the downscaling process is studied.

Automated summary

This paper presents a non-standard low-cost spline approximation method for approximating bivariate functions, which is then applied to Digital Elevation approximation. The accuracy of this method in the downscaling process is also studied.