@article{BraeuerBurchardtMunkeltBleieretal.2022,
  author    = {Br{\"a}uer-Burchardt, Christian and Munkelt, Christoph and Bleier, Michael and Heinze, Matthias and Gebhart, Ingo and K{\"u}hmstedt, Peter and Notni, Gunther},
  title     = {A new sensor system for accurate 3D surface measurements and modeling of underwater objects},
  series = {Applied Sciences},
  volume    = {12},
  journal   = {Applied Sciences},
  number    = {9},
  issn      = {2076-3417},
  doi       = {10.3390/app12094139},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-270792},
  year      = {2022},
  abstract  = {A new underwater 3D scanning device based on structured illumination and designed for continuous capture of object data in motion for deep sea inspection applications is introduced. The sensor permanently captures 3D data of the inspected surface and generates a 3D surface model in real time. Sensor velocities up to 0.7 m/s are directly compensated while capturing camera images for the 3D reconstruction pipeline. The accuracy results of static measurements of special specimens in a water basin with clear water show the high accuracy potential of the scanner in the sub-millimeter range. Measurement examples with a moving sensor show the significance of the proposed motion compensation and the ability to generate a 3D model by merging individual scans. Future application tests in offshore environments will show the practical potential of the sensor for the desired inspection tasks.},
  language  = {en}
}
@article{BraeuerBurchardtMunkeltBleieretal.2023,
  author    = {Br{\"a}uer-Burchardt, Christian and Munkelt, Christoph and Bleier, Michael and Heinze, Matthias and Gebhart, Ingo and K{\"u}hmstedt, Peter and Notni, Gunther},
  title     = {Underwater 3D scanning system for cultural heritage documentation},
  series = {Remote Sensing},
  volume    = {15},
  journal   = {Remote Sensing},
  number    = {7},
  issn      = {2072-4292},
  doi       = {10.3390/rs15071864},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-311116},
  year      = {2023},
  abstract  = {Three-dimensional capturing of underwater archeological sites or sunken shipwrecks can support important documentation purposes. In this study, a novel 3D scanning system based on structured illumination is introduced, which supports cultural heritage documentation and measurement tasks in underwater environments. The newly developed system consists of two monochrome measurement cameras, a projection unit that produces aperiodic sinusoidal fringe patterns, two flashlights, a color camera, an inertial measurement unit (IMU), and an electronic control box. The opportunities and limitations of the measurement principles of the 3D scanning system are discussed and compared to other 3D recording methods such as laser scanning, ultrasound, and photogrammetry, in the context of underwater applications. Some possible operational scenarios concerning cultural heritage documentation are introduced and discussed. A report on application activities in water basins and offshore environments including measurement examples and results of the accuracy measurements is given. The study shows that the new 3D scanning system can be used for both the topographic documentation of underwater sites and to generate detailed true-scale 3D models including the texture and color information of objects that must remain under water.},
  language  = {en}
}