vmtkcenterlines create duplicated lines

[Alfonso Santiago]

Hi all,

I successfully created a polyline form a tet mesh using vmtkcenterlines (see center.png).

To create a 1D mesh, I decimate and triangulate the polylines.

Problem is in some sections of the geometry, the polylines are repeated (a strong decimation makes this evident, see repeated.png)

I need to integrate those repeated centerlines in a single polyline with bifurcations. ¿how do I integrate those multiple repeated polylines in a single polyline with bifurcations?

I've tried collapsing the geometry using GiD, but that also removes the element connectivity (see points.png).

Thank you for your time.