Correlation scales of digital elevation models in developed coastal environments

Correlation scales of digital elevation models in developed coastal environments

Effects of Digital Elevation Models (DEM) Spatial Resolution on Hydrological Simulation

Digital Elevation Model is one of the most important data for watershed modeling whit hydrological models that it has a significant impact on hydrological processes simulation. Several studies by the Soil and Water Assessment Tool (SWAT) as useful Tool have indicated that the simulation results of this model is very sensitive to the quality of topographic data. The aim of this study is evaluati...

Quality assessment digital elevation models

A number of published stereo matching algorithms have been implemented and tested on SPOT images of areas for which we have gridded digital elevation models (DEMs) available with spacings of 80m or less as well as ground control checkpoints. Results will be presented for a comparison of stereo matched output with the DEMs and an analysis of the errors arising and their causes. Results will be d...

The “M” in digital elevation models

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Error Measurement in Multiresolution Digital Elevation Models

Multiresolution models are getting more and more importance for a scale-sensitive modelling of spatial data. In principle, they allow the representation of the data at a variety of scales. Of special importance are adaptive methods, where the resolution does not need to be uniform but may be variable. Then, error indicators are used to control the local resolution of the model. In this paper, w...