The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-5/W5
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W5, 117–122, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W5-117-2015
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W5, 117–122, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W5-117-2015

  09 Apr 2015

09 Apr 2015

PRECISE LASER-BASED OPTICAL 3D MEASUREMENT OF WELDING SEAMS UNDER WATER

T. Ekkel, J. Schmik, T. Luhmann, and H. Hastedt T. Ekkel et al.
  • Institute for Applied Photogrammetry and Geoinformatics, Jade University of Applied Sciences Oldenburg, Germany

Keywords: Calibration, Camera, Multi-Media, Optical, Photogrammetry, Tracking, Underwater

Abstract. This paper deals with the development of a measuring procedure and an experimental set-up (stereo camera system in combination with a projecting line laser and a positioning unit) which are intended to detect the surface topography, particularly of welds, with high accuracy in underwater environments. The system concept makes provision for the fact that the device can be positioned in space and manipulated by hand. The development, optimization and testing of the system components for surface measurements as well as calibration and accuracy evaluations are the main objectives within this research project. Testing procedures and probes are constructed and evaluated to verify the results. First results will be shown, where the test objects are underwater. The development considers conditions for a future adaption to underwater use.