A method for identifying and repairing holes on the surface of unorganized point cloud

Zhang, Chaolong; Zhou, Haibo; Duan, Jinhui

doi:10.1016/j.measurement.2023.112575

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…Wen et al [16] proposed an approximate fitting and interpolation method based on cubic b-spline curves, and repaired the point cloud holes after longitudinal slicing in the axial plane of the point cloud. Zhang et al [17] proposed a hole repair model based on a fuzzy inference system, which combined the geometric and curvature information of boundary points. The fast and accurate estimation of the elevation coordinates of the repair point was realized.…”

Section: Introductionmentioning

confidence: 99%

Research on Point Cloud Processing and Grinding Trajectory Planning of Steel Helmet Based on 3D Scanner

Meng,

Jiang,

et al. 2024

IEEE Access

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As the continuous expansion of robot grinding objects, the traditional manual teaching and offline programming methods can no longer meet people's requirements for grinding trajectories. With the help of a 3D scanner, model data can be acquired quickly and accurately, which facilitates trajectory planning and effective grinding for workpieces. In this paper, a point cloud hole repair method is proposed based on B-spline surface. It integrates point cloud segmentation, feature point removal, smoothing and hole repair, aiming to solve the hole problem in steel helmet scanning. In addition, to generate a uniform grinding trajectory, a planning method is proposed based on an improved B-spline curve. This method combines curve homogenization with equidistant offset and uses k-nearest neighbor search. Iteratively identify and eliminate unreliable point data to determine the best point of contact. The effectiveness of the two methods is verified by trajectory planning on three types of steel helmets.INDEX TERMS Robotic grinding, point cloud processing, holes repairing, trajectory planning, posture optimization.

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Section: Introductionmentioning

confidence: 99%