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- W162282854 abstract "Digital elevation models (DEM) of high resolution and high quality are required for many applications like urban modeling, readiness forcatastrophes or disaster assessment. A good source for the derivation of such DEMs from any place in the world are very high resolution(VHR) satellite stereo images as provided e.g. by Ikonos, QuickBird or WorldView. In this paper a method for the generation andrefinement of urban high resolution DEMs from VHR imagery is presented and evaluated. Urban DEMs generated from very highresolution satellite imagery of ground sampling distances of about one meter are normally of resolutions of about three to ten meters. Forthe above mentioned applications of urban DEMs such results are often too coarse. In this paper an advanced method for the generationof dense digital elevation models is presented and discussed. The method is mainly based on dense stereo algorithms developed forcomputer vision applications. It is adapted and optimized to earth observation requirements. In the paper the DEM generation togetherwith the additional refinement steps is presented and evaluated using very high resolution stereo imagery from Munich and Athens. Thegenerated DEMs are compared to ground truth data where available and the quality and efficiency of the algorithms are analyzed anddiscussed." @default.
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- W162282854 date "2009-06-01" @default.
- W162282854 modified "2023-09-27" @default.
- W162282854 title "Refinement of urban digital elevation models from very high resolution stereo satellite images" @default.
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