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3D modelling of 2.4 million rooftops in Switzerland

Photo: COWI

​COWI has been awarded a nationwide 3D roof-modelling project in Switzerland, which is part of a larger production of a topographic landscape model (TLM) by swisstopo, the Swiss Federal Office of Topography.

​In recent years, swisstopo has already mapped around 600,000 rooftops in Switzerland as part of the TLM. However, producing 3D data requires substantial capacity. Consequently, swisstopo has awarded the capture of the remaining 2.4 million rooftops to COWI in order to meet its deadline. 

"In past 3D projects, we have developed powerful production tools and workflows, which helped us succeed on various 3D city modelling projects in Europe and the Middle East. Naturally, we will draw on the solid knowledge and experience from these ventures in the mapping of Switzerland," says Chief Market Manager Kilian Ulm.

The TLM will be used for a variety of applications within many sectors, including modelling of noise emission and large-scale regional analyses.

Close collaboration

In the spring of 2014, the swisstopo project team visited COWI's production centres in India together with the project team from COWI Denmark. The visit allowed swisstopo and COWI to discuss details in the technical specifications face-to-face.

"The client was very excited about the visit in India. The visit not only allowed COWI and swisstopo to address technical solutions: It also made the process much easier for all parties involved and helped us to better meet the client's demands," says Ulm and continues:

"Building on our unmatched knowledge and expertise, our extraordinary production capacity, and close collaboration with the client, we are able to offer the best high-quality 3D city modelling on the market."

Tapping into local knowledge

COWI collaborates with two Swiss subcontractors, BSF Swissphoto and Ernst Basler + Partner, on quality control and software development. The collaboration with Swiss partners has allowed COWI to successfully integrate local knowledge.

"Working with strong Swiss partners helped to increase the acceptance of a larger international cooperation winning this prestigious project," states Ulm.

By Karen Øksnebjerg
Published 01.09.2014

LAST UPDATED: 16.09.2016