GeoPointing on indoor maps: enhancing compass sensor accuracy to enable interactive digital object selection in smartphone-based map applications

Authors:
Robert Neumann;Norman Peitek;Juan José Cuadrado-Gallego
Affiliations:
Otto-von-Guericke University, Magdeburg, Germany;Otto-von-Guericke University, Magdeburg, Germany;University of Alcalá, Madrid, Spain
Venue:
Proceedings of the 10th ACM international symposium on Mobility management and wireless access
Year:
2012

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Abstract

Indoor geopointing is a mobile computing field of application where high resolution compass data is required, in order to reliably identify digital objects on a map or within a scene. When mobile application developers wish to implement geopointing applications, they are hindered by the limited accuracy and reliability of the orientation sensors that are included in today's smartphones. Calibration issues and magnetic field interference are the two major influence factors that distort the data which is generated by the compass sensor. In this paper, we describe a combination of different techniques that we have developed to smoothen the orientation information that is produced by the compass sensor of an off-the-shelf smartphone. Our elaborations include filter functions that significantly enhance the orientation sensor's reliability and thus pave the way for reliable and stable geopointing applications.