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Free multi-floor indoor space extraction from complex 3D building models

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Abstract

Intelligent navigation and facility management in complex indoor environments are issues at the forefront of geospatial information science. Indoor spaces with fine geometric and semantic descriptions provide a solid foundation for various indoor applications, but it is difficult to comprehensively extract free multi-floor indoor spaces from complex three-dimensional building models, such as those described using CityGML LoD4, with existing methods for the subdivision or extraction of indoor spaces based on vector topology processing. Therefore, this paper elaborates a new voxel-based approach for extracting free multi-floor indoor spaces from 3D building models. It transforms the complicated vector processing tasks into a simple raster process that consists of three steps: voxelization with semantic enhancement, voxel classification, and boundary extraction. Experiments illustrate that the proposed method can automatically and correctly extract free multi-floor indoor spaces, especially two typical kinds of open indoor spaces, namely, lobbies and staircases.

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Acknowledgments

This paper was supported by the National Nature Science Foundation of China (No. 41571390, 41471320, and 41471332) and the National High Technology Research and Development Program of China (2015AA123901).

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Authors and Affiliations

  1. State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei, China

    Qing Xiong, Qing Zhu, Zhiqiang Du & Yeting Zhang

  2. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China

    Qing Zhu & Yun Li

  3. Collaborative Innovation Center for Geospatial Technology, Wuhan, China

    Qing Zhu, Zhiqiang Du & Yeting Zhang

  4. 3D Geoinformation, Urbanism, Delft University of Technology, Delft, Netherlands

    Sisi Zlatanova

  5. School of Resources and Environment, University of Electric Science and Technology of China, Chengdu, China

    Yan Zhou

Authors
  1. Qing Xiong
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  2. Qing Zhu
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  3. Zhiqiang Du
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  4. Sisi Zlatanova
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  5. Yeting Zhang
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  6. Yan Zhou
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  7. Yun Li
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Corresponding author

Correspondence to Zhiqiang Du.

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Communicated by: H. A. Babaie

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Xiong, Q., Zhu, Q., Du, Z. et al. Free multi-floor indoor space extraction from complex 3D building models. Earth Sci Inform 10, 69–83 (2017). https://doi.org/10.1007/s12145-016-0279-x

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  • DOI: https://doi.org/10.1007/s12145-016-0279-x

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