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local minimum in 3d

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This is not really a Houdini question, but does the notion of local minimum exist in 3d, without assumption on the geometry ? Except that it is not degenerate, no self intersection; basically a closed well formed surface.

For example, to find protrusions and recesses on a mesh

I was thinking of something like looking at where the neighboring points of each point at located with respect to the local normal plane, within a certain distance.

Edited by AntoineSfx

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22 hours ago, MENOZ said:

absolutely, I actually encountered that in magnetostatics a few years back; now I'll have to see if I can implement that on a discrete mesh.. It should be interesting

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