TERRAMOD : A Program for Generation of Three Dimensional Terrain Model Using Digital Elevation Data

Digital Elevation Model Generation and Retrieval of Terrain Attributes using CARTOSAT-1 Stereo Data

Terrain analysis is a very important part of the study of surface processes. Although several techniques have been used historically to study terrain, the use of satellite imageries has become one of the optimum methods now. Presently there are lots of satellite imageries available for extraction of elevation features microwave optical etc. The stereo pair images have a great potentiality in th...

Comparing a Ballistic Trajectory to Terrain using Digital Elevation Data

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Three Dimensional Representations of USGS Digital Elevation Model Data Using JAVA-3D: Implementation and Performance Issues

This paper investigates performance issues that arise when displaying large 3 dimensional geographic data sets in an OpenGL/Java3D environment. Five possible schemes for the rendering of Digital Elevation Models from the United States Geological Survey are tested for memory usage and rendering processor efficiency. These implementations exercise and compare Java3d geometry alternatives includin...

Digital Elevation Model Error in Terrain Analysis

Orthorectification and Digital Elevation Model (DEM) Generation Using Cartosat-1 Satellite Stereo Pair in Himalayan Terrain

High resolution data have high relief displacement in hilly terrains. Development of Digital Elevation model helps to assess bio resources more accurately in such terrains. While estimating bio resources in the Himalayan hilly terrain using multispectral LISS-III data of 23 m spatial resolution, the need for orthorectifcation of satellite data was necessary to correct for spatial distances due ...