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Using mobile systems to transmit location based information

 
: Kretschmer, Ursula

:
Fulltext (PDF; )

Kalliany, R. ; International Society of Photogrammetry and Remote Sensing and Spatial Information Sciences -ISPRS-:
Photogrammetric Computer Vision. Proceedings. CD-ROM : Proceedings of the ISPRS Commission III Symposium
Graz, 2002
pp.129-133
Symposium Photogrammetric Computer Vision (PCV) <2002, Graz>
English
Conference Paper, Electronic Publication
Fraunhofer IGD ()
cultural heritage; education; Mobile GIS; augmented reality; matching

Abstract
This paper presents an approach for enabling a mobile system to estimate position and orientation of users walking around a city. In an urban environment, localization methods based on the cellular phone network or GPS are not accurate or not reliable enough. This is the reason why we propose to use information out of a 3D model representing the surroundings where the users are staying. A camera represents the line of sight of the users. Frames out of the video stream can then be used to be compared with views of the 3D model. To do so, image processing techniques are applied to the system to calculate the absolute orientation of the camera which the user is carrying. Reconstructions of ancient buildings can then be presented by their exact position. By using specific displays that can be hold in front of the eyes the users can watch the reality and at the same time observe the replaced buildings. This proposed method will be applied in the GEIST research project. Here, a learning game for students is being developed to transmit historical facts of the history of a town.

: http://publica.fraunhofer.de/documents/N-10679.html