- 3D Indoor Navigation: a Framework of Combining BIM with 3D GIS    click here to open paper content1384 kb
by    LI, Yuan & HE, Zizhang | liyuan79@xmu.edu.cn   click here to send an email to the auther(s) of this paper
Short Outline
It is urgent to develop a framework which aims at supporting indoor evacuation in case of an urban emergency response. The authors propose a 3D GIS-based, BIM information-supported, topologic analysis-oriented indoor navigation solution.
With the quick development of urbanization, various high-rising buildings are continuously constructed, especially in mega cities. Corresponding to this dramatically gentrification, it is urgent for developing a framework of 3D indoor navigation, which aims at reducing the number of injuries and deaths and supporting indoor evacuation planning in the case of urban emergency response (like 9/11).

Since many years, digital building models have been in form of CAD models, which only contain geometric information but lost abundant of semantic information. The developments in the field have resulted with the emergency of an industry standard Building Information Model (BIM), being capable of restoring both geometric and semantic information. However, those models are still unable to support typical kinds of network analysis such as indoor routing and navigation because of the lacks of topologic structure. Geographic Information System (GIS), known as an ideal tool for representing geometry, semantic as well as topology, has been gradually utilized in many disciplines. Recent studies demonstrated that it is possible to transfer 3D geometric and semantic information from BIM into a 3D GIS environment. The next step, proposed in this paper, is to extend the research and to explore a framework of 3D GIS-based, BIM information-supported, topologic analysis-oriented indoor navigation.

The framework consists of four parts: first is the functional requirement analysis for 3D indoor navigation; second is the evaluation on the information provided by BIM; third is on the topological element for routing (including cost functions based on semantic information); last is on the geometric element for navigation (appropriate presentation of the navigation route). Finally, this paper gives a sample prototype implemented in a 3D GIS system (VEGGIS) and shows a case study of 3D indoor navigation under the circumstance of fire emergency response in a campus high-building.
3D indoor; Emergency Response; 3D GIS; Navigation; BIM
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