Analysis of elevation interpolation methods for creating digital elevation models

Resumo

Interpolation methods for creating digital elevation models using geoinformation system data are considered. For this purpose, the best-known methods are analyzed: inverse distance weighting (IDW), the Krige (or kriging) method, ANUDEM, spline interpolation, the natural neighbor method, and the method based on the construction of a triangular irregular network (TIN) model). The modeling accuracy is estimated for the area located between the Ui, Tara, and Irtysh Rivers in the Omsk region of West Siberia (Russia). Analysis of the results of estimating the accuracy of a digital relief model created using the ArcGIS 10 geoinformation system shows that the best results are obtained using spline methods and inverse distance weighting.