The images on the cover page were provided by:
- Chair of Photogrammetry and Remote Sensing & Chair of Cartography, Technische Universität München
- Geobasisdaten: © Stadtvermessung Frankfurt am Main
- IDAC Ltd, UK.
- Virtual City Systems, Berlin, Germany
- Chair of Geoinformatics, Technische Universität München. Image created based on master thesis work of Matthias Körner, jointly supervised with HTW Dresden
- 3D City Model of Berlin © Berlin Partner GmbH
- M.O.S.S. Computer Grafik Systeme GmbH, Taufkirchen, Germany