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KDDI R&D Laboratories Wins International Competition for Its Pedestrian Dead-Reckoning Technology

September 18, 2015

 SAITAMA, JAPAN, September 18, 2015 — KDDI R&D Laboratories, Inc. announced today that it has won the UbiComp/ISWC 2015 PDR Challenge, an international competition that spotlights pedestrian dead-reckoning (PDR) technology.

 The UbiComp/ISWC 2015 PDR Challenge, held from September 7 to 11, 2015 at the Grand Front Osaka, was the first international PDR competition to take place on the occasion of UbiComp 2015, an international joint conference sponsored by the Association of Computing Machinery (ACM), the world’s largest educational and scientific computing society.

 In the Challenge, participating teams competed to accurately estimate locations of approximately 100 people who walked the two floors of the Grand Front Osaka venue. While the other teams’ error average was over 10 meters, the KDDI R&D Laboratories team took the top prize with an error average of only 3.49 meters.

 KDDI R&D Laboratories will continue to move forward with research and development to raise the accuracy of its PDR technology even further.

UbiComp 2015 website:

Related website: KDDI R&D Laboratories Conducts “Street Guidance with Smartphones” in Shibuya Underground Passageways; Arriving at Where You Need to Go without Getting Lost, Even Underground or Indoors (Japanese language only)


At the awards ceremony (photo courtesy of Ubicomp/ISWC 2015 Organizing Committee)

Example of PDR results. The blue line is the correct pathway, and the red line is the PDR result produced by KDDI R&D Laboratories’ algorithm (in this example, this represents an error average of 1.79 meters).

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