In 2010 the German company GTA produced with inhouse developed the software tridiconTM 3D more than 180 3D European city models in level of detail 2 (LOD 2) with a total area of more than 5.000 square kilometres. tridiconTM 3D delivers high quality models from stereo aerial imagery. Other suitable data sources are LiDAR data (airborne laserscanning) and stereo satellite imagery.
Furthermore a digital terrain model and building footprints are used.Depending on the type of source data and the targeted quality of the results different software suites are on offer. Applications like visualisation, quality control and editing of the produced data are intergrated. Optionally, tridiconTM 3D offers fully automatic texturing from aerial images as well as the analysis of the solar potential. The tridiconTM CITY DISCOVERER as an additional module is available for versatile visualisation and analysis of 3D city models. Dynamic loading of terrain and buildings allows the 
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realtime visualisation of 3D city models of any size. In cooperation with the Fraunhofer Institute for Computer Graphics (IGD) GTA markets CityServer3D as a database solution for the management and updating of 3D city models. One of the first customers of the complete software suite is the German „Landesamt für innere Verwaltung MV“ in Schwerin, which will produce 3D buildings for the federal state of Mecklenburg-Vorpommern country-wide.3D buildings generated with tridiconTM 3D can be exported in all common data formats (CityGML, 3D Shape, KML, OBJ, 3DS, VRML). tridiconTM 3D enables commercial and municipal users to produce high quality 3D city models in LOD 2 quickly, area-wide and cost-effectively.For the professional production of digital 3D landmarks GTA offers the software suite tridiconTM 3D LANDMARK.Customers with an update contract can look forward to planned enhancements. Modules for the automatic modelling of buildings from aerial imagery without footprints as well as the automatic recognition of façades will be released in 2011.
