2-D Spatial Indexing Scheme in Optimal Time

  • Nectarios Kitsios
  • Christos Makris
  • Spyros Sioutas
  • Athanassios Tsakalidis
  • John Tsaknakis
  • Bill Vassiliadis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1884)


We consider the 2-dimensional space with integer coordinates in the range [1, N] x [1, N]. We present the MPST (Modified Priority Search Tree) index structure which reports the k points that lie inside the quadrant query range (- ∞, b] x (- ∞, c] in optimal O(k) time. Our Index Scheme is simple, fast and it can be used in various geometric or spatial applications such as: (1) 2 D dominance reporting on a grid (2) 2D maximal elements on a grid. Then, based on structures of Gabow et al. [6] and Beam and Fich [31] we describe an index scheme, which handles in an efficient way window queries in spatial database applications. In the general case in which the plane has real coordinates the above time results are slowed down by adding a logarithmic factor due to the normalization technique.


Query Range Spatial Database Search Path Minimum Bounding Rectangle Query Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Nectarios Kitsios
    • 1
  • Christos Makris
    • 1
  • Spyros Sioutas
    • 1
  • Athanassios Tsakalidis
    • 1
    • 2
  • John Tsaknakis
    • 1
  • Bill Vassiliadis
    • 1
    • 2
  1. 1.Department of Computer Engineering and Informatics: Graphics, Multimedia and GIS LaboratoryUniversity of PatrasPatrasGreece
  2. 2.Computer Technology Institute: Research Unit 5PatrasGreece

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