(26 July, CHEMNITZ) Dresden is now accessible as a complete, interactive 3D city model in the Internet. The 3D city model, with more than 150,000 buildings, is the largest of its kind to date in comparison to other similar 3D city models available using the Google Earth platform. Dresden’s vice mayor and city councilman for urban development, Herbert Fessenmayr, together with the head of the city surveying department, Helmet Krüger, gave official public access to the virtual model of the Saxon capital city via Google Earth’s Virtual Globe on the 9th of July. The interactive, real-time environment allows the user to move about in virtual space and observe the city from various perspectives. Internet users can start the model by clicking this link www.dresden.de/3d-model and then view it via Google Earth.
The Dresden city fathers insisted at the outset on having a complete representative model of the city, thus the entire urban area of the Saxon capital was recreated in model form. All buildings that were larger than 25 square meters were taken into consideration – approximately 154,000 buildings. With this volume, Dresden surpasses the “first-mover”, Berlin, with its 44,000 model buildings,that also went online using Google Earth Technology in March. Thirty 30 buildings in the Dresden model are presented to the viewer replete with fine details; they display an exact representation of the facade elements. Also, highly complex city-landmark buildings and geometric roof features can be viewed.
The city model has long been used by the city planning and survey departments for environmental studies and evaluation of design alternatives. Current uses include noise mapping, visualization of traffic flow and infrastructure, expansion of public transport network and location marketing.
One Step Beyond
LandXplorer distances itself from the software systems of Google Earth Professional and SketchUp with respect to the creation of cities and larger metropolitan areas. Google Earth Professional can create only untextured grey block models, and during a test of the software the system broke down using only approximately 6,000 buildings. Google Sketchup on the other hand, cannot texturize single buildings automatically and is therefore not suitable for use by local governments. LandXplorer however, can accommodate a data set of up to eight million buildings; it texturizes efficiently and automatically large-scale city models for Google Earth. In contrast to Google Earth Professional, LandXplorer can deal with all GIS formats and can export them into Google Earth. In addition, LandXplorer can prepare data for Streaming.
The LandXplorer Server technology – already being reconfigured and scheduled for release in September 2007 – will have a direct connection to the ARC SDE from ESRI, the market leader for geo-information systems, in the future. With this technology, fully automated 3D city information used in municipal planning scenarios can be created through the use of geospatial databases such as Oracle and then distributed through Web Map Services and Web Streaming.
See What Everyone is Talking About: Dresden 3D City Model in Google Earth in the News (English-language):
3D Geo sales and systems integration partner, Chemnitz-based virtualcitySYSTEMS, created and then transferred the city model into the Google Earth format KML.
Laurence Mc Kinley
Business Development Manager
Annaberger Str. 73
Tel: +49 (0) 371 / 400 9764
Fax: +49 (0) 371 / 400 9719