The paper concludes with results of usability tests of the system.ĭuring the last years, many solutions have been proposed for 3D Virtual Heritage representations. Following a background on air quality, air quality models, and Geo-Information visualisation, the system architecture and functionality is presented. The paper elaborates on the details of this research. In the system, visualisation can be achieved on-demand by querying an air pollutant information database of 10.330.629 records and a city object database with more than 700.000 records. The research also concentrated on visualisation of geospatial high volume data. A web based interactive system is developed to visualise pollutant levels that were acquired as hourly intervals from more than 100 stations in Turkey between years 20. This research is focused on web-based 3D visualisation of time-varying air quality data. Efficient storage of time-varying air quality information when combined with an efficient mechanism of 3D web-based visualisation would help very much in dissemination of air quality information to public. On the other hand, as this information is related with the health concerns of public, the information should be available publicly, and needs to be presented through an easily accessible medium and through a commonly used interface. As the variation of air quality is dependent on location, air quality information should be acquired, utilised, stored and presented in form of Geo-Information. There is an evident correlation between the topographic and climatic properties of a location and the air pollution and air quality on that location. Many countries where the industrial development and production rates are high face many side effects of low air quality and air pollution. The advantages, limitations, and future development of the proposed concept are discussed in the conclusions. Attention was paid to the areas important for handling heterogeneous input data, the design of interactive functionality, and navigation assistants. The developed 3D visualization shows a terrain model, 3D buildings, noise pollution, and other related information. The created web application displays a 3D model of the city district of Nový Lískovec in Brno, the Czech Republic. Emphasis was placed on the verification of available web technologies for example, X3DOM library was chosen for the implementation of a proof-of-concept web application. The theoretical sections comprise an analysis of cartographic principles for the 3D visualization of spatial data as well as a review of technologies and data formats used in the visualization of 3D models. This paper is devoted to the issue of 3D modelling from the levels of buildings to cities. The proprietary software Sputnik GIS more closely approximates the analytical capacity of a traditional GIS and provides outstanding advantages, such as DEM overlapping and visualization for its dissemination.ģD information is essential for a number of applications used daily in various domains such as crisis management, energy management, urban planning, and cultural heritage, as well as pollution and noise mapping, etc. Google Earth is a free platform and one of the most widely used VGs, and one of its best features its ability to provide users with quality visual results. The VGs Google Earth and Sputnik Geographic Information System (GIS) are selected and compared for this purpose. In this study, the best VG software for the dissemination and analysis of high-resolution UAV (Unmanned Aerial Vehicle) data is identified for global and continuous geographic scope support. The increasing accessibility and ease of use of virtual globes (VGs) represent primary advantages of this integration, and the digital Earth scientific community has adopted this technology as one of the main methods for disseminating the results of scientific studies. The integration of local measurements and monitoring via global-scale Earth observations has become a new challenge in digital Earth science.
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