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A MATLAB-based digital elevation model (DEM) data processing toolbox (MDEM)
Environmental Modelling & Software, 2019Abstract A MATLAB-based digital elevation model (DEM) data processing toolbox called MDEM is built upon an improved DEM data processing algorithm, known as the PDEM, for rectifying flat areas and depressions in DEM data and producing realistic patterns of flow accumulation and extracted channel networks. Compared to the original PDEM, the computation
Cheng Wang, Feifei Pan, Xiaohuan Xi
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Evaluation of TanDEM-X 90 m Digital Elevation Model
International Journal of Remote Sensing, 2019German Aerospace Center (DLR), EADS Astrium GmbH and Infoterra GmbH alliance came up with the idea of taking DTED-2 (Digital terrain elevation data, level-2) specifications to even higher standard of HRTE-3 (High resolution terrain elevation, level-3) in
A. Altunel
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Using Iterative Orthophoto Refinements to correct Digital Elevation Models (DEM's) [PDF]
, 1991 Abstract : A new technique is described that can be used to correct the digital elevation data obtained using digital correlation methods on terrain stereoimages. The new technique takes advantage of the speed of modern computers and the inherent geometric relationship between elevation data and orthophotographs to provide speedy, accurate and nearly ...
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SIBSON (NATURAL NEIGHBOUR) AND NON-SIBSONIAN INTERPOLATION FOR DIGITAL ELEVATION MODEL (DEM)
Survey Review, 2004AbstractA new interpolation scheme called as “non-Sibsonian interpolation” based on natural neighbours is proposed in [2]. The non-Sibsonian interpolation is reviewed in details and its performance in a Galerkin method for the solution of elliptic partial differential equations is studied in [17].
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Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010
2012In response to significant morphologic changes in Okmok Caldera due to the phreatomagmatic eruption of Okmok volcano in 2009, a new digital elevation model was acquired to document and quantitatively assess the new volcanic features and altered hydrology within the caldera.This DEM dataset provides elevation data derived from a stereo pair of Worldview-
J. R. Schaefer +2 more
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On the Quantification of Surface Changes using Grid‐based Digital Elevation Models (DEMs)
Transactions in GIS, 2000This paper discusses the quantification of vertical surface displacements by means of grid‐based digital elevation models (DEMs). The surface changes are quantified by comparing altitude and different topographic parameters, which have a geomorphic significance with respect to surface changes.
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Cartographica: The International Journal for Geographic Information and Geovisualization, 1994
This work presents the results of an intensive examination of two competing digital terrain models: regular gridded digital elevation models (DEMs) and triangulated irregular networks (TINs). The importance of representing a surface as accurately as possible in a given amount of space or time is presented. The backgrounds of the DEM and TIN models are
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This work presents the results of an intensive examination of two competing digital terrain models: regular gridded digital elevation models (DEMs) and triangulated irregular networks (TINs). The importance of representing a surface as accurately as possible in a given amount of space or time is presented. The backgrounds of the DEM and TIN models are
openaire +2 more sources