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Smooth out concave (recessed) parts of mesh preserving convex

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Hello everyone,

The title says it all. But to illustrate the idea better, I've also attached an image, where red lines show concave parts, that have to be smoothed (simplified), and green mark convex parts, that have to be preserved.



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I would do the following:

  • Create a convex hull
  • Measure the distance between the mesh and the hull
  • Constrain the smoothing, based on this distance.

Possibly you want to do this in an iterative loop, smoothing in smaller increments, re-evaluating the constraints every iteration.

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