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Morphological characteristic analysis of landforms on a macro scale is a significant part of digital terrain analysis. The existing research of morphological characteristics of landform recurs to the spatial variation of topographic factors on micro scale. Effective analysis methods of morphological and structural characteristics of landform on macro scale are still in shortage. In this paper, Grey...
Digital Elevation Model is one of the most important fundamental geographical datasets in National Spatial Data Infrastructure (NSDI). How to improve the accuracy and applicability of existing contour based DEM is one of key issues in DEM updating. Existing approaches mostly by the new technique which need more financial support. This paper presents a DEM oriented correction strategy that directly...
The scale issue is one of the most important theory problems in digital terrain analysis and geo-science analysis. The accurate extraction of DEM terrain parameters according to right DEM analysis scale and the acquisition of the experienced threshold of DEM modeling rely on the selection of the optimal analysis window size. Current research indicates that the analysis window size is hard to accurately...
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