Spatial Queries in the Presence of Obstacles

@inproceedings{Zhang2004SpatialQI,
  title={Spatial Queries in the Presence of Obstacles},
  author={Jun Zhang and Dimitris Papadias and Kyriakos Mouratidis and Manli Zhu},
  booktitle={EDBT},
  year={2004}
}
Despite the existence of obstacles in many database applications, traditional spatial query processing utilizes the Euclidean distance metric assuming that points in space are directly reachable. In this paper, we study spatial queries in the presence of obstacles, where the obstructed distance between two points is defined as the length of the shortest path that connects them without crossing any obstacles. We propose efficient algorithms for the most important query types, namely, range… CONTINUE READING
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