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Title	Requirements For Web-Based 4D Visualisation Of Integrated 3D City Models And Sensor Data In Urban Digital Twins
ID_Doc	45131
Authors	Gitahi J.; Kolbe T.H.
Year	2024
Published	Lecture Notes in Geoinformation and Cartography
DOI	http://dx.doi.org/10.1007/978-3-031-43699-4_43
Abstract	Urban Digital Twins (UDTs) have emerged as essential tools for managing city operations, forming the basis of smart city solutions. They offer a digital representation of the physical urban environment, which supports various city applications such as monitoring mobility, air quality, and modelling simulations. To accurately represent the physical world, UDTs need to be updated continuously to reflect the changes in the urban environment on time. The Internet of Things (IoT) enables real-time data collection to capture these changes. Combined with 3D city models, IoT allows the interactive visualisation of patterns and trends in UDTs. In this study, we conduct investigations on the requirements for the web visualisation of semantic 3D city models enriched with time-dependent properties from IoT and simulation data. We explore the 3D models and IoT data integration requirements, 4D web visualisation design considerations, and the technical implementation requirements for rendering dynamic properties for UDTs applications. The paper also presents a workflow and a web viewer prototype for the 4D visualisation of integrated 3D models and dynamic data. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Author Keywords	3D models; 4D visualisation; IoT; Urban digital twins

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