Parsing of ShapeNetSem meshes

[gchal]

Can you give some better instructions regarding the mesh creation with manifold?
I am following your steps and leads to segmentation fail.
Is the shapenetsem file models-OBJ.zip the one needed or am I doing sth wrong?

[clemense]

Hi,

1. What exactly leads to a segfault? Is it the manifold or simplify command? (The simplify command can lead to crashes when dealing with degenerated triangles, see e.g.: Crash when processing a post-processed shapenet file hjwdzh/Manifold#5)
2. Does it happen with all meshes or just a subset?

[seann999]

@clemense I am dealing with problem #1. How did you deal with it?

[clemense]

The easiest solution is to ignore those meshes. There shouldn't be many that fail.

[seann999]

Got it; with some patience, I got around 5250 successfully simplified meshes (some seemed to take a really long time, which I killed and discarded)

[thomasweng15]

@clemense I have the same error and am getting segmentation faults for objects in the ShapeNetSem obj files, which should be the same objects that are in acronym. for example, I am getting a crash for 5bbcf08fabf2d50336b41ce3eef1f5be.obj, a "DoubleBed" object. In this case do you suggest (1) removing such objects from the dataset, (2) using the non-simplified version (i.e. the version that was made watertight by the manifold command but not simplified), or (3) something else? Thank you for your help.

[thomasweng15]

It seems that (1) would require regenerating scene_contacts as some scenes reference the removed meshes.