Combination of map-supported particle filters with activity recognition for blind navigation

Authors:
Bernhard Schmitz;Attila Györkös;Thomas Ertl
Affiliations:
Institute for Visualization and Interactive Systems, Universität Stuttgart, Germany;Institute for Visualization and Interactive Systems, Universität Stuttgart, Germany;Institute for Visualization and Interactive Systems, Universität Stuttgart, Germany
Venue:
ICCHP'12 Proceedings of the 13th international conference on Computers Helping People with Special Needs - Volume Part II
Year:
2012

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Abstract

By implementing a combination of an activity recognition with a map-supported particle filter we were able to significantly improve the positioning of our navigation system for blind people. The activity recognition recognizes walking forward or backward, or ascending or descending stairs. This knowledge is combined with knowledge from the maps, i.e. the location of stairs. Different implementations of the particle filter were evaluated regarding their ability to compensate for sensor drift.