Medial axis extraction from a .STL file

How to extract a medial axis of a 3D object usng the .STL file generated from a CAD file? It would be very helpful If anyone can illustrate the process using a .STL file of a simple cylinder. and how to import those generated lines in a solid modelling software?

Answer 1

[darova]

An example

[x,y,z] = cylinder(10);
h = surf(x,y,z);
p = surf2patch(h,'triangle');
p.facecolor = 'red';
stlwrite('test',p)

Then just open .STL file from your software