The improvement and application of DEM for rivers;

Comprehensive Review on Error Analysis and Accuracy Appraisal of DEM;

Application of GIS and DEM to the analysis of deposition and erosion of foreshore in the Yangtze River estuary;

Polygon region method of digital elevation model generation;

Application of GIS digital elevation model technology in urban planning design;

Estimation of the rice planting area using digital elevation model and multitemporal moderate resolution imaging spectroradiometer;

The studying area is divided into a lot of regular grids and the elevation value of roof and floor is interpolated using Inverse Distance to a Power to form Digital Elevation Model (DEM).

The models for the small drainage areas were extended into a large area by improving the digital elevation model (DEM) data from a single block to a series of data blocks.

Methods Quantitatively analyzing different kinds of relief parameters,low-relief distribution and its relationship with lithology,based on high-quality digital elevation model(DEM) data.

Based on a common data obtained by the methods of transforming horizontal coordinate and interpolating vertical datums,a seamless digital elevation model(DEM) which unify the bathymetric/topographic data from discrete depths and terrain contours was established,and triangulation .

Forest vegetation parameters were acquired by combining DCM with the digital elevation model(DEM),such as the canopy vertical structure,tree height,canopy density,which cannot be accurately obtained by traditional digital photogrammetry methods.

Aiming at the limitations existing in the current algorithms,a novel algorithm for automatic building extraction based on Digital Elevation Model(DEM) is proposed.