• Laser & Optoelectronics Progress
  • Vol. 61, Issue 12, 1215007 (2024)
Lei Zhou1, Bao Zhao1、2、*, Dong Liang1、2, Zihan Wang1, and Qiang Liu1
Author Affiliations
  • 1School of Internet, Anhui University, Hefei 230039, Anhui , China
  • 2National Joint Local Engineering Research Center for Agroecological Big Data Analysis and Application Technology, Anhui University, Hefei 230601, Anhui , China
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    DOI: 10.3788/LOP231825 Cite this Article Set citation alerts
    Lei Zhou, Bao Zhao, Dong Liang, Zihan Wang, Qiang Liu. LDASH: A Local Feature Descriptor of Point Cloud with High Discrimination and Strong Robustness[J]. Laser & Optoelectronics Progress, 2024, 61(12): 1215007 Copy Citation Text show less

    Abstract

    Three-dimensional (3D) local feature description is an important research direction in 3D computer vision, widely used in many tasks of 3D perception to obtain point correspondences between two point clouds. Addressing the issues of low descriptiveness and weak robustness in existing descriptors, we propose a local divisional attribute statistical histogram (LDASH) descriptor. The LDASH descriptor is constructed based on local reference axes (LRA). First, the local space is partitioned radially, and then five feature attributes are computed within each partition, comprehensively encoding spatial and geometric information. In LDASH descriptor, we introduce a new attribute called distance weighted angle value (DWAV) for local feature description. DWAV is not dependent on LRA, thus enhancing the descriptor's robustness against LRA errors. Furthermore, a robustness enhancement strategy is proposed to reduce the interference of point cloud resolution variations in practical testing on the descriptors. The performance of the LDASH descriptor is extensively evaluated on six datasets with different application scenarios and interference types. The results demonstrate that LDASH descriptor outperforms existing descriptors in all datasets. Compared to the second-best method (divisional local feature statistics descriptor), LDASH descriptor exhibits an average improvement of approximately 16.3% in discriminability and 7.5% in robustness. Finally, LDASH descriptor is applied to point cloud registration, achieving a correct registration rate of 73% when combined with the five transformation estimation algorithms.
    Lei Zhou, Bao Zhao, Dong Liang, Zihan Wang, Qiang Liu. LDASH: A Local Feature Descriptor of Point Cloud with High Discrimination and Strong Robustness[J]. Laser & Optoelectronics Progress, 2024, 61(12): 1215007
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