texrecon duplicates / creates additional vertices

[nh2]

There seem to be many cases where texrecon, when writing out a .ply file, makes up additional vertices, destroying connectivity information.

For example, for a mesh with

Vertices: 15001
Faces: 30000

after texrecon it has:

Vertices: 22922
Faces: 29985

This happens even when the input mesh is a nice 2-manifold.

Visual example

In the previous image, Blender shows how the selected edge is properly connected (its end vertices' edges are all half-yellow).

But after texrecon on that mesh, that edge is disconnected (in the .ply texrecon writes):

---

Are you aware of this issue?

Any idea what might cause it, before we dive into debugging it?

[nmoehrle]

I am confused texrecon writes a .obj as output and that has exactly the vertices of the input mesh, it will even keep unreferenced vertices such that the index is the same. Can it be that your conversion into a ply file creates duplicate vertices? Obj allows you to write one texture coordinate per face and vertex so a duplication of vertices is not necessary, for your ply flavor that might be different. How do you convert into a ply file?

[nh2]

You are right. I have confirmed that the written obj does not have this problem. It was some post-processing on my side. Sorry for the confusion.

[nmoehrle]

No worries, glad I could help :-)