Efficient viewshed computation on terrain in external memory

@article{Andrade2011EfficientVC,
  title={Efficient viewshed computation on terrain in external memory},
  author={Marcus Vin{\'i}cius Alvim Andrade and Salles V. G. Magalh{\~a}es and Mirella A. Magalh{\~a}es and W. Randolph Franklin and Barbara Cutler},
  journal={GeoInformatica},
  year={2011},
  volume={15},
  pages={381-397}
}
Nowadays, a huge volume of data about terrains is available and generally, the data can not be completely stored in computer’s internal memory. So, many GIS applications require efficient algorithms to manipulate the data externally. One of these applications is the viewshed computation that consists in obtain the visible points from a given point p. In this paper, we present an efficient algorithm to compute the viewshed on terrains stored in external memory. In most practical cases (when the… CONTINUE READING
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