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An Egocentric Urban Viewshed: A Method for Landmark Visibility Mapping for Pedestrian Location Based Services

  • Phil Bartie
  • Steven Mills
  • Simon Kingham
Chapter
Part of the Lecture Notes in Geoinformation and Cartography book series (LNGC)

Abstract

A variety of information can be provided to pedestrians using location based services in support of tasks such as wayfinding. Typically current location aware systems use proximity to filter databases for contextual information. We show that a filter based on the visibility of features is a useful additional capability made possible through the use of digital surface models. A number of visibility metrics are suggested for adoption by a location based service, to provide quantitative visibility information so that items of interest may be ranked according to a meaningful priority. Real world experiences validate the usefulness of these metrics, and a number of improvements are suggested.

Keywords

location-based services digital surface models viewsheds visibility metrics usefulness test 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Phil Bartie
    • 1
  • Steven Mills
    • 1
  • Simon Kingham
    • 2
  1. 1.Geospatial Research Centre (NZ)ChristchurchNew Zealand
  2. 2.Department of GeographyUniversity of CanterburyChristchurchNew Zealand

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