CityGML, kent modellerinin depolanması ve transfer edilmesi için tasarlanmış, açık bir veri modeli formatıdır. 3B CBS uygulamalarında en çok kullanılan TKGM tarafından gerçekleştirilen Kent Modelleri Kadastro Projesi kapsamında da CityGML formatı kullanılmaktadır. Bu proje kapsamında, modeli, modelinde tanımlı olmayan kadastro çalışmalarında gerekli verilerin tutulması genişletilmelidir. bağlam...

City Geography Markup Language (CityGML), an OpenGIS® Encoding Standard for the representation, storage and exchange of virtual 3D city and landscape models, has gained worldwide attraction in the GIS community. The format is supported by a variety of software vendors (Autodesk, Bentley, Safe Software FME, Oracle etc.) and is adopted by many international cities, communities, and authorities (A...

In contrast with photorealistic visualizations, urban landscape applications, and building information system (BIM), 3D volumetric presentations highlight specific calculations and applications of 3D building elements for 3D city planning and 3D cadastres. Knowing the precise volumetric quantities and the 3D boundary locations of 3D building spaces is a vital index which must remain constant du...

3D city building models can improve many applications such as urban planning, navigation, disaster management, traffic control etc., in various aspects especially in visualisation. However, compared with the data volume and complexity of 3D city models, the capability of devices and network band are still limited. To improve the visualisation efficiency, generalisation of 3D city models is requ...

The production and dissemination of semantic 3D city models is rapidly increasing benefiting a growing number of use cases. However, their availability in multiple LODs and in the CityGML format is still problematic in practice. This hinders applications and experiments where multi-LOD datasets are required as input, for instance, to determine the performance of different LODs in a spatial anal...

Cities have always been considered a horsepower of industrial growth over centuries. However, urbanization often has environmental effects. In this paper we will focus on one of them, namely air pollution, and how we can integrate 3D city models and air quality sensor data. In most cases, air quality data is acquired from static sensor systems like weather stations, which lack the coverage requ...

Tiivistelmä Acknowledgements Abbreviations

An increasing number of cities are developing digital models. It becomes thus necessary to take into account changes over time. Interoperability and thus the use of standards is also recommended. In this paper, we propose a new method, based on CityGML to take into account changes in the objects which compose the city. This method is efficient for any kind of changes of the city objects (semant...