Results 161 to 170 of about 49,633 (216)
Some of the next articles are maybe not open access.
Terrain complexity and uncertainties in grid‐based digital terrain analysis
International Journal of Geographical Information Science, 2006The objective of this research is to study the relationship between terrain complexity and terrain analysis results from grid‐based digital elevation models (DEMs). The impact of terrain complexity represented by terrain steepness and orientation on derived parameters such as slope and aspect has been analysed.
Xuejun Liu, Qiming Zhou, Yizhong Sun
exaly +2 more sources
SHAPE MODELING AND ANALYSIS OF TERRAIN
International Journal of Shape Modeling, 1994Summary: The construction of high-fidelity digital terrain models (DTM) requires the development of adaptive techniques for modeling and analysis of terrain surfaces. The paper presents a conceptual framework for digital terrain modeling which includes all relevant tasks to achieve this goal.
Martin Brändli, Bernhard Schneider
openaire +2 more sources
Multi-scale terrain representation and terrain analysis
SPIE Proceedings, 2009Multi-scale handling and representation of terrain is one of the key hot topics in GIS. It can meet the demand of different users on the different scale geo-spatial data. Through multi-scale representation of terrain the non-scale GIS can be achieved and the users can acquire the info they care about easily by such GIS.
Xi-lin Ke +3 more
openaire +1 more source
Terrain Analysis for Armed Forces
2014The main activities of armed forces take place in the terrain. Knowledge of terrain impact on such activities is very substantial for their achievement. Terrain impact on chosen activities can be described using mathematical models and these can be applied in GIS.
Václav Talhofer +5 more
openaire +1 more source
Terrain matching by analysis of aerial images
[1990] Proceedings Third International Conference on Computer Vision, 2002A terrain matching algorithm has been developed for use in a passive aircraft navigation system. A sequence of aerial, optical images is matched to a reference digital map of the three-dimensional terrain. Stereo analysis of successive images results in the recovery of an elevation map of the observed terrain.
Jeffrey J. Rodríguez, Jake K. Aggarwal
openaire +1 more source
Efficient representation and analysis of triangulated terrains
Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2017Terrain trees are a new in-core family of spatial indexes for the representation and analysis of Triangulated Irregular Networks (TINs). Terrain trees combine a minimal encoding of the connectivity of the underlying triangle mesh with a hierarchical spatial index, implicitly representing the topological relations among vertices, edges and triangles ...
Riccardo Fellegara +2 more
openaire +1 more source
Area Sampling for Terrain Analysis
The Professional Geographer, 1962Area sampling is most useful in reducing the time and effort required for studies of large areas. It permits the formulation of rapid approximations and, because time is saved, it enables more detailed observations to be made and a greater number of variables to be considered.
openaire +1 more source
Terrain analysis and remote sensing
Photogrammetria, 1982Remote sensing has been used in terrain analysis for several decades in the form of conventional black and white aerial photographs. During the past decade or so, newer forms of remote sensing and improved methods of data analysis have become widely available. A number of texts now exist outlining the principles of remote sensing and their applications
E. C. Barrett, John R. G. Townshend
+4 more sources
Uncertainty analysis for soil‐terrain models
International Journal of Geographical Information Science, 2006The aim of the study was to examine how robust soil‐terrain models are to uncertainty in the source elevation data. The study site was a 74 ha agricultural field in Australia. A global positioning system was used to measure elevation and the uncertainty of the measurement, therefore allowing maps of elevation and its uncertainty to be created.
Thomas F. A. Bishop +2 more
openaire +1 more source