Indoor Localization Using Camera Phones

Authors:
Nishkam Ravi;Pravin Shankar;Andrew Frankel;Ahmed Elgammal;Liviu Iftode
Affiliations:
Rutgers University, USA;Rutgers University, USA;Rutgers University, USA;Rutgers University, USA;Rutgers University, USA
Venue:
WMCSA '06 Proceedings of the Seventh IEEE Workshop on Mobile Computing Systems & Applications
Year:
2006

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Abstract

There has been a shift in the focus of indoor localization research from improving accuracy to minimizing infrastructure requirements [4, 6, 1]. The reason is well understood: since location information only serves as a parameter to location-based services, the cost of deploying localization systems should be a minute fraction of the total cost of provisioning location-based services. We demonstrate the possibility of determining user's location indoors based on what the cameraphone "sees". The camera-phone is worn by the user as a pendant(Figure 1) and images are periodically captured and transmitted over GPRS to a web server. The web server has a database of images with their corresponding location. Upon receiving an image, the web server compares it with stored images, and based on the match, estimates user's location.