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Austrian 3-D city information system: Michael Schulze-Horsel describes a new innovative technology for querying and visualizing geodata from multiple sources in 2-D and 3-D, interactively, via the Internet.

Map2Day is a web-based interactive 3-D City Information System where various data types such as aerial imagery, terrain models, 2-D vector data, 3-D city models and GIS data can be queried and displayed in both a 2-D window and a 3-D landscape with interactive navigation. The product, a web portal designed by CyberCity AG, ViewTec AG and Forest Mapping Management GmbH, provides information in the fields of tourist information, city marketing, urban planning and landscape architecture.

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Generation of 3-D city models

The 3-D city models in Map2Day are generated using a semi-automatic feature extraction from stereo aerial imagery. It is possible ...

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