London, Excel, UK / March 12, 2024 - March 14, 2024
Oceanology International 2024
At Oceanology International, Fraunhofer IPM will be showcasing laser scanning technology for the efficient inspection of underwater infrastructure (underwater laser scanning) and for surveying the seabed topography. We serve the entire 3D data process chain – from robust systems for capturing the 3D geometry and position of objects to data evaluation and data visualization. We are presenting ULi – a LiDAR system for underwater inspection as well as our airborne bathymetric laser scanner – a multi-wavelength LiDAR for measuring seabed topography. This is complemented by 3D-AI, a software for the automated interpretation of 3D data.
The laser-based LiDAR system ULi (Underwater LiDAR System) from Fraunhofer IPM inspects large underwater structures using the time-of-flight method, which has been adapted especially for use in turbid water. The measuring system records 3D structures over distances of up to several tens of meters. This means that the range of ULi in turbid water is at least three times larger compared to other optical systems. The resolution is in the sub-centimeter range and is thus at least ten times higher than that of sonar systems. In addition to the measurement technology, the scanning system includes novel algorithms for fast and reliable data evaluation and data interpretation.
The Airborne Bathymetric Laser Scanner ABS measures shallow waters from the air and provides data for detailed topographic 3D maps. Thanks to multi-wavelength pulsed time-of-flight measurement, the ultra-lightweight LiDAR scanner captures the topography of the water body bed very precisely from an altitude of up to 50 m. ABS captures the water surface and depth, but also the peripheral area of water bodies including the adjacent terrain, generating 3D data efficiently and quickly. It simultaneously captures the environment with two laser beams of different wavelengths. This makes topographic seabed measurements significantly more accurate than measurements with just one laser beam.
3D-AI is part of a comprehensive end-to-end process chain for the evaluation of 2D and 3D measurement data. The software combines artificial intelligence and 3D geometry based object detection. We customize 3D-AI by adding object classes or adapting the software to further data sources and outputs.