EgoViz - A mobile based spatial interaction system

Keith Gardiner, Junjun Yin, James D. Carswell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


This paper describes research carried out in the area of mobile spatial interaction and the development of a mobile (i.e. on-device) version of a simulated web-based 2D directional query processor. The TellMe application integrates location (from GPS, GSM, WiFi) and orientation (from digital compass/tilt sensors) sensing technologies into an enhanced spatial query processing module capable of exploiting a mobile device's position and orientation for querying real-world 3D spatial datasets. This paper outlines the technique used to combine these technologies and the architecture needed to deploy them on a sensor enabled smartphone (i.e. Nokia 6210 Navigator). With all these sensor technologies now available on one device, it is possible to employ a personal query system that can work effectively in any environment using location and orientation as primary parameters for directional queries. In doing so, novel approaches for determining a user's query space in 3 dimensions based on line-of-sight and 3D visibility (ego-visibility) are also investigated. The result is a mobile application that is location, direction and orientation aware and using these data is able to identify objects (e.g. buildings, points-of-interest, etc.) by pointing at them or when they are in a specified field-of-view.

Original languageEnglish (US)
Title of host publicationWeb and Wireless Geographical Information Systems - 9th International Symposium, W2GIS 2009, Proceedings
Number of pages18
StatePublished - 2009
Event9th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2009 - Maynooth, Ireland
Duration: Dec 7 2009Dec 8 2009

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5886 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference9th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2009

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • General Computer Science


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