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Underwater Cave Mapping using Stereo Vision

Author: Weidner

Year: 2017

Notes:

  • Volumetric model with stereo and light beam
  • In underwater robotic: 2.5D maps or image mosaics for SLAM
  • Interesting related works
  • Problem of lighting variations beacause of divers light beam: brightness Constancy Constraint is violated
  • contour tracking: Canny edge detector on a thresholded binary image to select the area of the light beam
  • sparse reconstruction: Stereo matching with SURF descriptor and epipolar search on contour pixels
  • dynamic environnement with bubbles
  • Visual odometry performed with OrbSLAM2