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Article

3D Indoor Environment Abstraction for Crowd Simulations in Complex Buildings

1
School of Built Environment, The University of New South Wales, Sydney, NSW 2052, Australia
2
School of Public Health and Community Medicine, The University of New South Wales, Sydney, NSW 2052, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Derek Clements-Croome
Buildings 2021, 11(10), 445; https://doi.org/10.3390/buildings11100445
Received: 29 July 2021 / Revised: 19 September 2021 / Accepted: 24 September 2021 / Published: 29 September 2021
(This article belongs to the Section Architectural Design, Urban Science, and Real Estate)
This paper presents an approach for the automatic abstraction of built environments needed for pedestrian dynamics from any building configuration. The approach assesses the usability of navigation mesh to perform realistically pedestrian simulation considering the physical structure and pedestrian abilities for it. Several steps are examined including the creation of a navigation mesh, space subdivision, border extraction, height map identification, stairs classification and parametrisation, as well as pedestrian simulation. A social-force model is utilised to simulate the interactions between pedestrians and an environment. To perform quickly different 2D/3D geometrical queries various spatial indexing techniques are used, allowing fast identification of navigable spaces and proximity checks related to avoidance of people and obstacles in built environments. For example, for a moderate size building having eight floors and a net area of 13,000 m2, it takes only 104 s to extract the required building information to run a simulation. This approach can be used for any building configuration extracting automatically needed features to run pedestrian simulations. In this way, architects, urban planners, fire safety engineers, transport modellers and many other users without the need to manually interact with a building model can perform immediately crowd simulations. View Full-Text
Keywords: built environment; space subdivision; navigation mesh; crowd simulation; BIM built environment; space subdivision; navigation mesh; crowd simulation; BIM
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MDPI and ACS Style

Aleksandrov, M.; Heslop, D.J.; Zlatanova, S. 3D Indoor Environment Abstraction for Crowd Simulations in Complex Buildings. Buildings 2021, 11, 445. https://doi.org/10.3390/buildings11100445

AMA Style

Aleksandrov M, Heslop DJ, Zlatanova S. 3D Indoor Environment Abstraction for Crowd Simulations in Complex Buildings. Buildings. 2021; 11(10):445. https://doi.org/10.3390/buildings11100445

Chicago/Turabian Style

Aleksandrov, Mitko, David J. Heslop, and Sisi Zlatanova. 2021. "3D Indoor Environment Abstraction for Crowd Simulations in Complex Buildings" Buildings 11, no. 10: 445. https://doi.org/10.3390/buildings11100445

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