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RT-SLAM: a generic and real-time visual SLAM implementation

Author: Solà

Year: 2012

Notes:

  • open source c++ library focused on genericity, and high execution speed
  • data structure: world, map, robot, sensors, observatins ~ WOLF
  • EKF SLAM as back end with efficient indexing
  • data manager ~ processor
  • map manager: maintain the map at a reasonnable size, remove poor landmarks
  • active search: constraint search area where landmark can be found
  • one point RANSAC: modification of RANSAC that uses EKF to obtain a whole model with less points
  • lmk parametrized with Anchored inverse depth $(x_0, ray_0, \rho)$ in the beginnning (7DOF) then switched to Euclidean paramtrization when the pose has converged
  • Harris KP with ZNCC for matching, robust to viewpoint change by using its predicted appearance
  • test with constant velocity motion model and VIO