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Title	A Requirement Analysis On Extending Semantic 3D City Models For Supporting Time-Dependent Properties
ID_Doc	4065
Authors	Chaturvedi K.; Kolbe T.H.
Year	2019
Published	ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 4, 4/W9
DOI	http://dx.doi.org/10.5194/isprs-annals-IV-4-W9-19-2019
Abstract	Semantic 3D City Models are used worldwide for different application domains ranging from Smart Cities, Simulations, Planning to History and Archeology. Well-defined data models like CityGML, IFC and INSPIRE Data Themes allow describing spatial, graphical and semantic information of physical objects. However, cities and their properties are not static and change with respect to time. Hence, it is important that such semantic data models handle different types of changes that take place in cities and their attributes over time. This paper provides a systematic analysis and recommendations for extensions of Semantic 3D City Models in order to support time-dependent properties. This paper reviews different application domains in order to identify key requirements for temporal and dynamic extensions and proposes ways to incorporate these extensions. Over the last couple of years, different extensions have been proposed for these standards to deal with temporal attributes. This paper also presents an analysis to which degree these extensions cover the requirements for dynamic city models. © 2020 Authors.
Author Keywords	CityGML; IFC; INSPIRE; IoT; Patterns; Semantic 3D City Models; Sensors; Timeseries

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