How to define finer voxels and smoothen the surface of a 3D structure?

Hi!

I have a 3D matrix containing a structure:

I need to make the grid size finer and at the same time keep the surface smooth. For increasing the number of voxels I have tried interp3, and this is the result:

Now I need to smoothen the contour of the structure (remove the edges at the surface), or let's say to improve the resolution.

Have you any idea how to do it?

Thank you in advance for your help!

Answer 1

[Pedro Galvez]

Hi,

You can try to implement a Radial Basis Function with a Thin Plate Spline in order to smoothen the edges.

This paper ( http://www.cs.jhu.edu/~misha/Fall05/Papers/carr01.pdf ) is applied to a 3D curface, but it can be also implemented to a 2D shape.

Regards,

Pedro