A Multisensor Architecture Providing Location-based Services for Smartphones

Authors:
Antonio J. Ruiz-Ruiz;Oscar Canovas;Pedro E. Lopez-De-Teruel
Affiliations:
Department of Computer Engineering, University of Murcia, Murcia, Spain;Department of Computer Engineering, University of Murcia, Murcia, Spain;Department of Computer Engineering, University of Murcia, Murcia, Spain
Venue:
Mobile Networks and Applications
Year:
2013

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Abstract

This paper introduces a multisensor architecture to fuse data acquired from different sensors available in commodity smartphones in order to build accurate location-based services, and pursuing a good balance between accuracy and performance. Using scale invariant features from the images captured using the smartphone camera, we perform a matching process against previously obtained images to determine the current location of the device. Several refinements are introduced to improve the performance and the scalability of our proposal. Location fingerprinting, based on IEEE 802.11, will be used to determine a cluster of physical points, or zone, where the device seems to be according to the received signal strength. In this way, we will reduce the number of images to analyze to those contained in the tentative zone. Additionally, accelerometers will also be considered in order to improve the system performance, by means of a motion estimator. This set of techniques enables a wide range of location-based applications.