List of products by author: R. Wißler

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  The Scanning of Tunnels – The Portuguese Experience

  Abstract: In 2004, the National Railway Network of Portugal started to use laser scanning technology for the inspection of tunnels. In partnership with a German company, all tunnels in the Portuguese Railway network have been digitized in a campaign of three weeks duration. The entire inspection process has been improved considerably by intensive usage of the scan data. Software tools for field and...

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  Use of thermography for tunnel-inspection

  Abstract: Today, machine vision, especially laser scanning, is already widely used for the inspection of tunnels. Thermal imaging provides additional, valuable information for determining the structural condition of tunnels. This paper covers an approach for integration of thermography into a laser scanning system. It presents key aspects of a scanner system with integrated thermal imaging: The scan...

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