Abstract
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.
Highlights
AND MOTIVATIONSemantic 3D City Models describe spatial and graphical aspects of the city objects, and provide ontological structure including thematic classes, attributes, and their interrelationships
This section reviews the current state of three popular standards for representing Semantic 3D City Models and evaluates them against the key requirements identified in the previous sections
The standards considered in the study are: Open Geospatial Consortium (OGC) CityGML, buildingSMART IFC, and INSPIRE
Summary
Semantic 3D City Models describe spatial and graphical aspects of the city objects, and provide ontological structure including thematic classes, attributes, and their interrelationships Such information models make it possible for applications and simulation tools to distinguish urban objects (like buildings and streets) and use their rich thematic and geometric information for queries, statistical computations, simulations, and visualizations. CityGML (Groger et al, 2012) issued by the Open Geospatial Consortium (OGC) is one of the very popular standards for modeling and exchanging Semantic 3D City Models This standard facilitates the integration of heterogeneous data from multiple sources and allows for the representation of geometrical and semantic attributes of the city level objects (such as buildings, streets, water bodies, vegetation etc.) along with their interrelationship to the other objects. The focus of the requirement analysis is on the conceptual modeling aspects and not on the implementation aspects such as software/vendor support, potential incompatibility issues, and file sizes
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
