Exemplar-based framework for 3D point cloud hole filling

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Holes can arise in 3D point clouds due to a number of reasons such as incomplete scans, occlusions, and packet loss. We present an exemplar-based framework for hole filling in 3D point clouds, which exploits non-local self similarity to provide plausible reconstruction even for large holes and complex surfaces. Points along the hole boundary are given priority that determines the order in which they are processed. Hole filling is performed iteratively and uses templates near the hole boundary to find the best matching regions elsewhere in the cloud, from where existing points are transferred to the hole. The proposed method has been compared with several existing methods and has shown superior results, both visually and in terms of the Hausdorff distance.

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