Quality Evaluation of DEMs

Haris Papasaika and Emmanuel Baltsavias
Institute of Geodesy and Photogrammetry ETH Zurich Wolfgang-Pauli-Str. 15, CH-8093, Zurich, Switzerland Telephone: +41 44 6336808
{haris, manos}@geod.baug.ethz.ch

Abstract: Nowadays, sensors and processing techniques provide for the same site DEMs with different geometric characteristics and accuracies. Each DEM contains intrinsic errors due to the primary data acquisition technology and processing methodology in relation with the particular terrain and landcover type. The accuracy of these datasets is often unknown, inhomogeneous within each dataset, and almost always, only a global measure is given. We present a new concept for the quality characterization of DEMs based on different quality measures.

Keywords: Multi-source data, Integration, Quality Control, Spatio-temporal, Digital Elevation Model

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