Open Access
Improving the accuracy of digital terrain models
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TLDR
The change from paper maps to GIS, in various kinds of ge- ographical data analysis and applications, has made it easy to use the same spatial data for dierent applications.Abstract:
The change from paper maps to GIS, in various kinds of ge- ographical data analysis and applications, has made it easy to use the same spatial data for dierentread more
Citations
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Terrain mapping from unmanned aerial vehicles
A.S.M. Yazid,R.A. Wahid,K.M. Nazrin,Asmala Ahmad,A.S. Nasruddin,D. Rozilawati,M.A. Hamzah,M.Y.A. Razak +7 more
TL;DR: In this article, the authors proposed a novel way of generating DTM and DSM by using UAVs for different land covers including forest, plantation and developed areas in the tropical region of Malaysia.
References
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Book ChapterDOI
Quantifying Uncertainty of Digital Elevation Models Derived from Topographic Maps
TL;DR: In this paper, the authors explored a methodology for quantifying the uncertainty of DEMs created by digitizing topographic maps and examined the origins of uncertainty in DEM production, by computing a vector total of Root Mean Square Error from the source map, sampling and measurement errors, and the interpolation process.
Assessment of Kriging Accuracy in the GIS Environment
TL;DR: In this article, the sensitivity of ordinary Kriging interpolation in the GIS environment was evaluated with respect to the resolution of the predicted grid and conclusions were drawn for applications in spatial analysis.
Constrained Visualization of 2D Positive Data using Modified Quadratic Shepard Method
TL;DR: This paper presents an algorithm that produces a non-negative graph through scattered positive data sets using Modified Quadratic Shepard method, which is improved in that it produces the positive graph without much deviation of shapes from the ones due to Modified QuadRatic Shepard scheme.
Book ChapterDOI
Algorithms for Triangulated Terrains
TL;DR: In this article, the authors discuss ways to represent a triangulated irregular network (TIN) in a data structure, and give some of the basic algorithms that work on TINs.