Efficient Compression and Indexing of Trajectories

  • Nieves R. Brisaboa
  • Travis Gagie
  • Adrián Gómez-Brandón
  • Gonzalo Navarro
  • José R. Paramá
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10508)

Abstract

We present a new compressed representation of free trajectories of moving objects. It combines a partial-sums-based structure that retrieves in constant time the position of the object at any instant, with a hierarchical minimum-bounding-boxes representation that allows determining if the object is seen in a certain rectangular area during a time period. Combined with spatial snapshots at regular intervals, the representation is shown to outperform classical ones by orders of magnitude in space, and also to outperform previous compressed representations in time performance, when using the same amount of space.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Nieves R. Brisaboa
    • 1
  • Travis Gagie
    • 2
  • Adrián Gómez-Brandón
    • 1
  • Gonzalo Navarro
    • 3
  • José R. Paramá
    • 1
  1. 1.Computer Science DeparmentUniversidade da CoruñaA CoruñaSpain
  2. 2.School of Informatics and TelecommunicationsDiego Portales UniversitySantiagoChile
  3. 3.Department of Computer ScienceUniversity of ChileSantiagoChile

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