Evaluation and Assessment of the Impacts of the Spatial Resolution on the Accuracy of the Digital Elevation Model (original) (raw)

ABSTARCT Ground surveying methods are main sources for digital elevation data that is usually utilized in the creation of a Digital Elevation Model (DEM). DEM usually is a main input in many Engineering and Environmental applications. The quality of the DEM is a vital issue that controls the qualities of outputs in different applications. Different factors including the data source, the data density, the sampling method, the spatial resolution and the interpolation scheme control the quality of the DEM. This research is focused towards investigating the effects of the spatial resolution of the DEMs generated from ground surveying data on their qualities where digital elevation data has been collected from a test area of corrugated terrain using ground surveying methods. Qualitative and quantitative analyses have been applied on DEMs created from digital elevation data with different resolutions through; visual analysis, statistical analysis, profile analysis and finally accuracy ass...