SG2 Algorithms and Software
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The DEMIX subgroup 2 focused the efforts on identifying methods and implementations for the quantitative and/or qualitative intercomparison of DEM products. While there is a significant body of scientific literature covering a dizzying number of quality characteristics, the majority have focused on very local products and/or special cases. The goal of DEMIX is to provide options to end-users that can help guide them in deciding the most appropriate DEM product for their application and support geospatial practitioners defend their choices |
With the support and feedback from subgroup 1, the methods proposed will be implemented by subgroup 3 in a manner to promote open science, communication and discovery of DEM product quality fit for purpose.
The subgroup has published several peer-reviewed papers in support of its mandate:
Novel Approach for Ranking DEMs: Copernicus DEM Improves One Arc Second Open Global Topography, C. Bielski et al., IEEE Transactions on Geoscience and Remote Sensing, vol. 62, pp. 1-22, 2024
Ranking of 10 Global One-Arc-Second DEMs Reveals Limitations in Terrain Morphology Representation, P. Guth at al., Remote Sens., 16(17), 3273, 2024.
Benchmarking Elevation Plus Land Surface Parameters Finds FathomDEM and Copernicus DEM Win as Best Global DEMs, P. Guth et al., Remote Sens., 17(23), 3919, 2025.