This paper describes the design and engineering of algorithms for computing visibility maps on massive grid terrains. Given a terrain T, specified by the ...
ABSTRACT. This paper describes the design and engineering of algo- rithms for computing visibility maps on massive grid ter- rains. Given a terrain T, ...
Introduction. ▫. Visibility definition. ▫. Model. ▫. Related work. ▫. IO model. ▫. Our results. ▫. Van kreveld's radial sweep algorithm in internal memory.
Three new algorithms to compute the viewshed for any given terrain T and viewpoint v are described, one of which sweeps the terrain centrifugally, ...
This paper describes the design and engineering of algo- rithms for computing visibility maps on massive grid ter- rains. Given a terrainT , specied by the ...
Abstract. Nowadays, a huge volume of data about terrains is available and generally, the data can not be completely stored in computer's inter- nal memory.
Given a terrain T and a viewpoint v, the viewshed of v is the set of grid points of T that are visible from v. To decide whether a point p is visible one ...
Processing the massive data presents significant challenges to GIS systems and demands algorithms that are optimized for both data movement and computation.In ...
Applications of viewshed computation include siting radio transmitters, surveillance, and visual environmental impact measurement. TiledVS runs a rotating line ...
Oct 3, 2018 · This paper describes I/O-efficient algorithms for computing visibility maps in a couple of different models. First, we describe two algorithms ...
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