Bulletin of Surveying and Mapping ›› 2020, Vol. 0 ›› Issue (4): 21-26.doi: 10.13474/j.cnki.11-2246.2020.0106

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A point cloud registration algorithm based on ISS-SHOT features

LI Yuxiang1, GUO Jiming1, PAN Shangyi2, Lü Lili2, LU Zhuxing1, ZHANG Di1   

  1. 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Sinohydro Engineering Bureau;
    4 Co., Ltd., Xining 810007, China
  • Received:2019-07-01 Revised:2020-03-02 Online:2020-04-25 Published:2020-05-08

Abstract: Aiming at the problems of error-corresponding points, slow convergence rate and long time for the point cloud registration, a registration algorithm based on theintrinsic shape signatures(ISS) and signature of histograms of orientations(SHOT) is proposed.After down-sampling by voxel grid method, the feature points of point cloud are extracted by the ISS algorithm, described by the SHOT and matched by the cosine similarity. Then, the wrong corresponding points are eliminated by the RANSAC algorithm, so that the two point clouds obtain a good initial positon. Finally, an accurate result can be obtained based on point to plane ICP algorithm.The experimental results show that compared with the traditional ICP algorithm and the ISS-based SAC-IA+ICP algorithm, the proposed algorithm has higher registration accuracy and efficiency, and it is robust to point clouds with large data quantity and low overlap rate.

Key words: ISS, SHOT, feature descriptor, point cloud registration, point to plane ICP

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