Crash when no proposals are found

[Chay16]

Hey @llijiang !
Thanks for sharing this implementation with us, it really helped me for my project.
I noticed that the training crashes when no proposals are found before calling the clusters_voxelization, especially the crash occurs at the following line as an empty tensor is given :
https://github.com/Jia-Research-Lab/PointGroup/blob/a41c2cd22808861f0d4986b2825875c10bb661e5/model/pointgroup/pointgroup.py#L223

Printed Error : RuntimeError: cannot perform reduction function max on tensor with no elements because the operation does not have an identity

Have you ever experienced this issue ? If yes, what are your recommendation to overcome it ?

Thanks,
Chayan

[odddozen]

Hey Chay,

I am having the same problem as you. Did you find a solution?

Thanks,
Alex