Acta Geodaetica et Cartographica Sinica ›› 2023, Vol. 52 ›› Issue (5): 789-797.doi: 10.11947/j.AGCS.2023.20220262

• Photogrammetry andRemote Sensing • Previous Articles     Next Articles

A spatial consistency-based point cloud registration method for the same platform

ZHANG Guangyun1, HAN Yi1, ZHANG Rongting1, LI Mingfeng1, JI Wenlai2   

  1. 1. School of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211816, China;
    2. Architectural Design and Research Institute, Nanjing Tech University, Nanjing 210009, China
  • Received:2022-04-19 Revised:2023-02-03 Published:2023-05-27
  • Supported by:
    The National Natural Science Foundation of China (No. 41974214);Natural Resources Funds(Ocean Technology Innovation) Project of Jiangsu(No. JSZRIIYKJ202101)

Abstract: The feature-based point cloud registration establishes the correspondence by using the feature descriptor. However, due to the influence of noise and repetitive structure, there will inevitably be a large number of mismatches, resulting in a fall in registration accuracy. In this paper, a spatial consistency-based registration (SCR) method was developed for the point cloud from the same platform. SCR makes full advantage of geometric information between discrete points to improve the point cloud registration accuracy. The graph model of the point cloud that is collected by the same platform is constructed by increasing the number of candidates, and an optimization of reweight random walks matching (RRWM) was proposed to obtain the optimal result. The point cloud registration was built using the hypothesis-and-verify approach. Comprehensive experiments demonstrate that the proposed SCR algorithm is effective in registration methods.

Key words: point cloud registration, feature matching, outlier filtering, graph matching

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