Page 1 of 3 Next  Kilian Ulm Sales & Marketing Manager CyberCity AG Urdorf, Switzerland kilian.ulm@cybercity.tv The 3D model was designed for use in GIS applications, CAD environments and visualization. A combination of 3D data with 2D informative attribute data was accounted for in developing the model to allow for queries and analysis in 3D GIS system. CyberCity AG (Zurich, Switzerland) by order of Unique (Flughafen Zürich AG) has generated a highly accurate 3D model of the Zurich airport buildings and its surroundings. Data quality, maintenance and integration of 2D cadastral and specific airport information were key requirements of the project. The model primarily serves for applications in GIS, planning, engineering and visualization. The extent of the project area is approximately 10 km2 and includes the airport as well as the approach corridor. The accuracy and level-of-detail in the 3D model of the airport area took the highest level of importance while the approach corridor played an important role for security reasons. To fulfill the project requirements, CyberCity used its software CyberCity-Modeler to create the 3D building model in a semi-automatic procedure using photogrammetric means. The derived model was enhanced in a second step by using CAD drawings to add geometric details, which are not visible in the stereo aerial imagery in the photogrammetric measurement. 3D model generation using aerial images (Photogrammetry) The 3D buildings were created using photogrammetry. The semi-automatic 3D feature extraction with CyberCity-Modeler using stereo aerial imagery with scale 1:6'000 - 1:10'000 allowed to efficiently create the 3D geometry of the complex airport buildings. 2D cadastral data was used as a reference to fulfill the requirements of the client to manage the new 3D data consistently in addition to existing official 2D data in ArcGIS (ESRI). In general, photogrammetry takes advantage of the overlap (and therefore of the different viewing angles) of neighbouring aerial images, which were acquired during a flight campaign. By processing the images in the Digital Photogrammetry Workstation CC-VisualStar, objects like buildings are captured in the three dimensions with their real x, y and z coordinates.  3D model of the new Dock Midfield of Zurich International Airport in ArcGlobe (ESRI).  Left: 2D CAD drawing of an airport tower. Right: Resulting 3D model of the Terminal A with tower and passenger bridges after the manual enhancement.
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