PLY file header

[AT181903]

I noticed that your PLY files have two more property than mine:

property uchar inst_label
property uchar label

What are they?

[aycatakmaz]

In our data, we added additional channels for instance labels and body_part labels in the ply files, to represent per-point labels.

Please see this function in our data generation repository for Human3D, we have this save_point_cloud_w_inst_label function that saves instances and labels as additional channels in the ply file.

Instance ID values: 0 means background - 1,2,3,... mean separate human instance IDs.
Label values: 0 means background, the remaining values mean original semantic label IDs. These values are mapped to body parts using the dictionary here.

These channels are used/needed only during training, or while evaluating the metrics - so they are not relevant for the inference on an arbitrary point cloud.

Hope this helps!

[AT181903]

Thank you for explanation