|
|||||
|
|
Spline quasi-interpolation in the Bernstein basis and its application to digital elevation models |
|
| Authors: | Francisco J Ariza-López Domingo Barrera Salah Eddargani María José Ibáñez Juan F Reinoso |
| Institution: | 1. Department of Cartographic, Geodesic and Photogrammetry Engineering, University of Jaén, Jaén, Spain;2. Department of Applied Mathematics, University of Granada, Granada, Spain;3. Department of Architectural and Engineering Graphic Expression, University of Granada, Granada, Spain |
| Abstract: | 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. |
| Keywords: | altimetric error Bernstein–Bézier coefficients DEM upscaling downscaling tensor product quasi-interpolation |