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Barrier-Free Pedestrian Routing with Contraction Hierarchies

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2021

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WANG, Xiaofeng, ed., Fusheng WANG, ed.. SIGSPATIAL '21: Proceedings of the 29th International Conference on Advances in Geographic Information Systems. New York: Association for Computing Machinery, 2021, pp. 668-669. ISBN 978-1-4503-8664-7. Available under: doi: 10.1145/3474717.3486797

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We present a holistic approach for pedestrian routing that allows computing shortest paths that may have indoor and outdoor sections. Such routes arise, for example, when the destination is not just an address but a specific store in a large mall, or when one needs to get to a certain track at a large train station. Currently, map services as Google Maps or OSRM do not offer such functionality. We identify and overcome three main challenges for answering such complex route planning queries: (i) Pedestrian routing requires fine-grained data, as the location of stairs and elevators, building dventrances, building footprints, and elevation/level information. A single missing staircase can change the length of the computed path severely. (ii) Indoor routing has to be integrated carefully into classical path planning to allow the computation of sensible routes that may enter and exit buildings. (iii) Given the large amount of data to be considered in a query, acceleration techniques need to be applied in order to achieve interactive query times. Retrieving barrier-free routes for wheelchairs is also our important use case.

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SIGSPATIAL '21 : 29th International Conference on Advances in Geographic Information Systems, 2. Nov. 2021 - 5. Nov. 2021, Beijing
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ISO 690LI, Ruoying, Sabine STORANDT, Uli MÜLLER, David WEBER, 2021. Barrier-Free Pedestrian Routing with Contraction Hierarchies. SIGSPATIAL '21 : 29th International Conference on Advances in Geographic Information Systems. Beijing, 2. Nov. 2021 - 5. Nov. 2021. In: WANG, Xiaofeng, ed., Fusheng WANG, ed.. SIGSPATIAL '21: Proceedings of the 29th International Conference on Advances in Geographic Information Systems. New York: Association for Computing Machinery, 2021, pp. 668-669. ISBN 978-1-4503-8664-7. Available under: doi: 10.1145/3474717.3486797
BibTex
@inproceedings{Li2021Barri-56905,
  year={2021},
  doi={10.1145/3474717.3486797},
  title={Barrier-Free Pedestrian Routing with Contraction Hierarchies},
  isbn={978-1-4503-8664-7},
  publisher={Association for Computing Machinery},
  address={New York},
  booktitle={SIGSPATIAL '21: Proceedings of the 29th International Conference on Advances in Geographic Information Systems},
  pages={668--669},
  editor={Wang, Xiaofeng and Wang, Fusheng},
  author={Li, Ruoying and Storandt, Sabine and Müller, Uli and Weber, David}
}
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