Mixed Media 3D Scanning

• Applicant: Professor Dr. Andreas Nüchter
• Subject Area: Automation, Mechatronics, Control Systems, Intelligent Technical Systems, Robotics ; Geodesy, Photogrammetry, Remote Sensing, Geoinformatics, Cartography ; Measurement Systems
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 453829987

In the proposed project, the refraction at the water surface under the influence of waves in triangulation-based 3D laser scanning is examined and methods for modeling and correction are developed. First, we aim at a highly-robust detection and classification of the laser lines in the recorded images. Then the actual refraction is studied and examined under the influence of waves on the water surface. The intent to find a model that enables the errors in the resulting scans to be eliminated. An explicit approach by the concrete modeling of the waves and an implicit approach in which the errors are optimized by the expansion of a SLAM algorithm are developed in the following.In an existing test environment, a wave generator is integrated and a test system is set up to create repeatable conditions and to validate the developed methods through tests.Another goal is to record static scans through the water surface and to correct errors caused by waves and to extend the methods to mobile scanning. It is also used to create scans while the scanner is moving. An external, already developed system for recording the initial trajectory and a SLAM procedure developed in advance and adapted as part of the project are used.

• DFG Programme: Research Grants