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I am fairly new to OpenVDB. Apologies in advance if this query sounds trivial.

I want to construct an implicit surface from a set of unorganized data points. I want to know how I can do it using OpenVDB.

The current way I am doing it is as follows: (here)

  1. Compute distance function on a rectangular grid to an arbitrary data set.
  2. Find an initial surface for the gradient flow algorithm
  3. Solve the time dependent PDE for the level set function

I want to mention that I am just using a simple regular grid for the above three steps.

The example on creating and writing a grid from the code examples is very similar to what I want except that I want to replace the sphere's level set with a level set from the point cloud.

Is there a way that I can build a level set from utilities in the tools namespace to construct a level set from a point cloud? I see ParticlesToLevelSet as something similar to what I want to do. Can somebody kindly share an example?

Tom Billings
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1 Answers1

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I'm also interested in finding the level surface of an unstructured point cloud.

The best thing I could find is this paper that describes an algorithm for doing it. The author also has other papers on the same topic. I haven't found any code that implements this type of algorithm though.

https://www.cs.drexel.edu/~david/Papers/Linsen_TVCG.pdf

Noah_S
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