Journal of Computational Design and Engineering

Society for Computational Design and Engineering (한국CDE학회)
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Motion-capture-based walking simulation of digital human adapted to laser-scanned 3D as-is environments for accessibility evaluation

  • Maruyama, Tsubasa (Graduate School of Information Science and Technology, Hokkaido University) ;
  • Kanai, Satoshi (Graduate School of Information Science and Technology, Hokkaido University) ;
  • Date, Hiroaki (Graduate School of Information Science and Technology, Hokkaido University) ;
  • Tada, Mitsunori (National Institute of Advanced Industrial Science and Technology)
  • Received : 2015.09.17
  • Accepted : 2016.03.21
  • Published : 2016.07.01
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Abstract

Owing to our rapidly aging society, accessibility evaluation to enhance the ease and safety of access to indoor and outdoor environments for the elderly and disabled is increasing in importance. Accessibility must be assessed not only from the general standard aspect but also in terms of physical and cognitive friendliness for users of different ages, genders, and abilities. Meanwhile, human behavior simulation has been progressing in the areas of crowd behavior analysis and emergency evacuation planning. However, in human behavior simulation, environment models represent only "as-planned" situations. In addition, a pedestrian model cannot generate the detailed articulated movements of various people of different ages and genders in the simulation. Therefore, the final goal of this research was to develop a virtual accessibility evaluation by combining realistic human behavior simulation using a digital human model (DHM) with "as-is" environment models. To achieve this goal, we developed an algorithm for generating human-like DHM walking motions, adapting its strides, turning angles, and footprints to laser-scanned 3D as-is environments including slopes and stairs. The DHM motion was generated based only on a motion-capture (MoCap) data for flat walking. Our implementation constructed as-is 3D environment models from laser-scanned point clouds of real environments and enabled a DHM to walk autonomously in various environment models. The difference in joint angles between the DHM and MoCap data was evaluated. Demonstrations of our environment modeling and walking simulation in indoor and outdoor environments including corridors, slopes, and stairs are illustrated in this study.

Keywords

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