Print Email Facebook Twitter Free multi-floor indoor space extraction from complex 3D building models Title Free multi-floor indoor space extraction from complex 3D building models Author Xiong, Qing (Wuhan University) Zhu, Qing (Southwest Jiaotong University; Wuhan University; Collaborative Innovation Center for Geospatial Technology) Du, Zhiqiang (Wuhan University; Collaborative Innovation Center for Geospatial Technology) Zlatanova, S. (TU Delft Urban Data Science) Zhang, Yeting (Wuhan University; Collaborative Innovation Center for Geospatial Technology) Zhou, Yan (University of Electric Science and Technology of China, Chengdu) Li, Yun (Southwest Jiaotong University) Date 2016-11-25 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 voxelbased 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. Subject Free multi-floor indoor spaceCityGML LoD4Indoor space extractionVoxel To reference this document use: http://resolver.tudelft.nl/uuid:76878988-c401-4262-bc56-35282c95e298 DOI https://doi.org/10.1007/s12145-016-0279-x Embargo date 2017-11-25 ISSN 1865-0481 Source Earth Science Informatics, 10 (1), 69-83 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2016 Qing Xiong, Qing Zhu, Zhiqiang Du, S. Zlatanova, Yeting Zhang, Yan Zhou, Yun Li Files PDF Free_Multi_floor_Indoor_S ... uthors.pdf 2.13 MB Close viewer /islandora/object/uuid:76878988-c401-4262-bc56-35282c95e298/datastream/OBJ/view