Real-time loop detection with bags of binary words

  title={Real-time loop detection with bags of binary words},
  author={Dorian G{\'a}lvez-L{\'o}pez and Juan D. Tard{\'o}s},
  journal={2011 IEEE/RSJ International Conference on Intelligent Robots and Systems},
We present a method for detecting revisited places in a image sequence in real time by using efficient features. We introduce three important novelties to the bag-of-words plus geometrical checking approach. We use FAST keypoints and BRIEF descriptors, which are binary and very fast to compute (less that 20µs per point). To perform image comparisons, we make use of a bag of words that discretises the binary descriptor space and an inverse index. We also introduce the use of a direct index to… CONTINUE READING
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