Feasibility of using grammars to infer room semantics
Current indoor mapping approaches can detect accurate geometric information but are incapable of detecting the room type or dismiss this issue. This work investigates the feasibility of inferring the room type by using grammars based on geometric maps. Specifically, we take the research buildings at...
Gespeichert in:
| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
28 June 2019
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| In: |
Remote sensing
Year: 2019, Jahrgang: 11, Heft: 13 |
| ISSN: | 2072-4292 |
| DOI: | 10.3390/rs11131535 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/rs11131535 Verlag, kostenfrei, Volltext: https://www.mdpi.com/2072-4292/11/13/1535 
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| Verfasserangaben: | Xuke Hu, Hongchao Fan, Alexey Noskov, Alexander Zipf, Zhiyong Wang and Jianga Shang |
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| 520 | |a Current indoor mapping approaches can detect accurate geometric information but are incapable of detecting the room type or dismiss this issue. This work investigates the feasibility of inferring the room type by using grammars based on geometric maps. Specifically, we take the research buildings at universities as examples and create a constrained attribute grammar to represent the spatial distribution characteristics of different room types as well as the topological relations among them. Based on the grammar, we propose a bottom-up approach to construct a parse forest and to infer the room type. During this process, Bayesian inference method is used to calculate the initial probability of belonging an enclosed room to a certain type given its geometric properties (e.g., area, length, and width) that are extracted from the geometric map. The approach was tested on 15 maps with 408 rooms. In 84% of cases, room types were defined correctly. It, to a certain degree, proves that grammars can benefit semantic enrichment (in particular, room type tagging). | ||
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