PLGP: point cloud inpainting by patch-based local geometric propagating

Aero-engine compressor blades point cloud hole repairing method

“…In order to verify the hole repair method based on the boundary diffusion mechanism, the seventh stage blade of the highpressure compressor of CFM56-7B aeroengine is taken as an example, and the point cloud model of the blade is acquired by the metroscan 350 handheld three-dimensional laser scanner. Aiming at the curved face, cross face and other hole types in the point cloud model, from the objective angles of density ratio and standard deviation, the central point diffusion repair method in literature [10] is used as a comparison method to analyze the hole repair effect of this method and evaluate the universality of this method. The central diffusion repair method takes the calculated midpoint of the hole boundary as the diffusion center to diffuse to the surrounding boundary to repair the missing points of the hole.…”

“…Wang [9] and others projected the hole boundary area onto the two-dimensional plane, calculated the diffusion of the midpoint of the hole boundary to the surrounding boundary, completed the hole repair in the two-dimensional plane, and then reflected the repair points into the three-dimensional hole area to complete the hole repair. Ju [10] et al Proposed a point cloud hole repair method based on the boundary rejection algorithm, which uses the repulsive force of adjacent points to push the boundary points into the hole area to repair the holes. However, the hole repairing method is still not suitable for the application of point cloud model of aeroengine compressor blade.…”