Print Email Facebook Twitter Extraction of the 3D Free Space from Building Model for Indoor Navigation Title Extraction of the 3D Free Space from Building Model for Indoor Navigation Author Diakite, A.A. (TU Delft Urban Data Science) Zlatanova, S. (TU Delft Urban Data Science) Date 2016-10 Abstract For several decades, indoor navigation has been exclusively investigated in a 2D perspective, based on floor plans, projection and other 2D representations of buildings. Nevertheless, 3D representations are closer to our reality and offer a more intuitive description of the space configuration. Thanks to recent advances in 3D modelling, 3D navigation is timidly but increasingly gaining in interest through the indoor applications. But, because the structure of indoor environment is often more complex than outdoor, very simplified models are used and obstacles are not considered for indoor navigation leading to limited possibilities in complex buildings. In this paper we consider the entire configuration of the indoor environment in 3D and introduce a method to extract from it the actual navigable space as a network of connected 3D spaces (volumes). We describe how to construct such 3D free spaces from semantically rich and furnished IFC models. The approach combines the geometric, the topological and the semantic information available in a 3D model to isolate the free space from the rest of the components. Furthermore, the extraction of such navigable spaces in building models lacking of semantic information is also considered. A data structure named combinatorial maps is used to support the operations required by the process while preserving the topological and semantic information of the input models. Subject 3D Indoor NavigationFree Space ExtractionNavigable SpaceIFCCityGMLIndoorGML To reference this document use: http://resolver.tudelft.nl/uuid:ebe92ed5-e4c4-4c05-9af7-4a121cfbd320 DOI https://doi.org/10.5194/isprs-annals-IV-2-W1-241-2016 Source ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences, IV-2/W1, 241-248 Event 11th 3D Geoinfo Conference, 2016-10-20 → 2016-10-21, Athens, Greece Part of collection Institutional Repository Document type journal article Rights © 2016 A.A. Diakite, S. Zlatanova Files PDF isprs_annals_IV_2_W1_241_2016.pdf 2.28 MB Close viewer /islandora/object/uuid:ebe92ed5-e4c4-4c05-9af7-4a121cfbd320/datastream/OBJ/view