CODEWITHSUNDEEP
polygoncgalsurface3d-reconstruction
Paul Coulson
Paul Coulson

Reputation: 27

Polygonal surface reconstruction

I want to reconstruct a surface from a point cloud of xyz points only, but the example provided requires a normal for each point. I have 2 questions: 1) what does the normal represent. 2) what do I do if I don't have the normal.

Upvotes: 0

Views: 111

Answers (1)

sloriot
sloriot

Reputation: 6293

If you have a point cloud that represent a surface, the associated normal is the normal direction on the surface at the point. If you don't have such normals, CGAL provides some methods to estimate and orient those normals: pca_estimate_normals() or jet_estimate_normals() for the estimation and mst_orient_normals() for the orientation.

Note that the links I'm giving are for the upcoming 5.1 release but the functions exist in previous releases. You can also read the new reconstruction tutorial here.

Upvotes: 0

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