Reorient point cloud normals for better surface reconstruction #2220
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Normal estimation methods generally are ambiguous between a vector and its negation. Currently, the point cloud extraction picks the normal orientations arbitrarily, while Poisson surface reconstruction expects oriented normals. This leads to incorrect back-faces and extraneous seams in the meshes (below)
The view directions can be used to reorient the normals, leading to more consistent meshes.
Can be tested with
ns-export pointcloud --reorient-normals True --normal-method open3d --output-dir ./exports/reoriented --load-config {...}