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@INPROCEEDINGS{Schumann:842815,
      author       = {Schumann, Jette and Boltes, Maik},
      title        = {{T}racking of wheelchair users in dense crowds},
      reportid     = {FZJ-2018-01011},
      pages        = {1-4},
      year         = {2017},
      note         = {online Proceedings, s.
                      http://www.ipin2017.org/proceedings.php},
      abstract     = {This paper proposes a tracking algorithm for wheelchair
                      users fusing Inertial Measurement Unit (IMU) data and
                      trajectory information of surrounding people. This approach
                      is based on a hybrid tracking system for laboratory
                      experiments with pedestrians in dense crowds consisting of
                      cameras and IMUs. A camera system on the ceiling forms the
                      basic detection and tracking system. Current experiments
                      with heterogeneous crowds have arisen new requirements to
                      this system. Participating wheelchair users tend to get
                      occluded by surrounding people which leads to incomplete
                      trajectories. To fill those temporary gaps the data of IMUs
                      that are attached to the wheelchairs are used. The IMU
                      trajectories are calculated with an Inertial Navigation
                      System (INS) algorithm. The orientation is calculated with a
                      sensor fusion filter and the distance is estimated by
                      numerical integration of the acceleration measurements. To
                      limit the drift the calculated velocity of the wheelchair is
                      restricted to the velocity of the pushing person.
                      Preliminary studies were performed to investigate this
                      approach and resulting trajectories are presented.},
      month         = {Sep},
      date          = {2017-09-18},
      organization  = {International Conference on Indoor
                       Positioning and Indoor Navigation,
                       Sapporo (Japan), 18 Sep 2017 - 21 Sep
                       2017},
      cin          = {JSC},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511) / PhD no Grant - Doktorand ohne besondere
                      Förderung (PHD-NO-GRANT-20170405)},
      pid          = {G:(DE-HGF)POF3-511 / G:(DE-Juel1)PHD-NO-GRANT-20170405},
      typ          = {PUB:(DE-HGF)8},
      url          = {https://juser.fz-juelich.de/record/842815},
}