ANALYSIS OF ELEVATION INTERPOLATION METHODS FOR DEVELOPING DIGITAL TERRAIN MODELS
A. I. Pavlova
Novosibirsk State University of Economics and Management, ul. Kamenskaya 52, Novosibirsk, 630099 Russia
Keywords: цифровая модель рельефа (ЦМР), географические информационные системы (ГИС), морфометрический анализ рельефа, интерполяция, аппроксимация, digital elevation model (DEM), geographic information systems (GIS), morphometric analysis of terrain, interpolation, approximation
Subsection: ANALYSIS AND SYNTHESIS OF SIGNALS AND IMAGES
Abstract
Interpolation methods for developing digital terrain model using geoinformation system data are considered. For this purpose, the best-known methods are analyzed: inverse distance weighting (IDW), kriging, ANUDEM, spline interpolation, the natural neighbor method, and the method based on the construction of a triangulation irregular network (TIN) model). The modeling accuracy is estimated for a terrain 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 terrain model developed using the ArcGIS 10 geoinformation system shows that the best results were obtained using spline methods and inverse distance weighting.
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