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Sensors 2015, 15(9), 24466-24486; doi:10.3390/s150924466

Techniques for Updating Pedestrian Network Data Including Facilities and Obstructions Information for Transportation of Vulnerable People

1
Samsung SDS, 125 Olympic-ro 35-gil, Songpa-gu, Seoul 05510, Korea
2
Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 2 July 2015 / Revised: 14 September 2015 / Accepted: 15 September 2015 / Published: 23 September 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1804 KB, uploaded 23 September 2015]   |  

Abstract

Demand for a Pedestrian Navigation Service (PNS) is on the rise. To provide a PNS for the transportation of vulnerable people, more detailed information of pedestrian facilities and obstructions should be included in Pedestrian Network Data (PND) used for PNS. Such data can be constructed efficiently by collecting GPS trajectories and integrating them with the existing PND. However, these two kinds of data have geometric differences and topological inconsistencies that need to be addressed. In this paper, we provide a methodology for integrating pedestrian facilities and obstructions information with an existing PND. At first we extracted the significant points from user-collected GPS trajectory by identifying the geometric difference index and attributes of each point. Then the extracted points were used to make an initial solution of the matching between the trajectory and the PND. Two geometrical algorithms were proposed and applied to reduce two kinds of errors in the matching: on dual lines and on intersections. Using the final solution for the matching, we reconstructed the node/link structure of PND including the facilities and obstructions information. Finally, performance was assessed with a test site and 79.2% of the collected data were correctly integrated with the PND. View Full-Text
Keywords: pedestrian navigation service; transportation of vulnerable people; pedestrian network data; volunteered geographic information; facilities and obstructions pedestrian navigation service; transportation of vulnerable people; pedestrian network data; volunteered geographic information; facilities and obstructions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Park, S.; Bang, Y.; Yu, K. Techniques for Updating Pedestrian Network Data Including Facilities and Obstructions Information for Transportation of Vulnerable People. Sensors 2015, 15, 24466-24486.

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