Correspondence of featureline vertex location in dataset to that on mesh-template generated from SMPL?

[shash29-dev]

Hi,

Thanks for this amazing dataset. I was going through the dataset. Could you let me know about the following querry?

The smpl template is deformed based on featurelines vertices, using handle-based deformation.

Assuming, handle points are the boundary point on garment-template. Through segmentation masks of SMPL, we know which one is neckline, hemline etc.
However, how do we know the correspondence between such point on template to that of corresponding feature_line vertex locations, that are provided in the dataset. How to set hard-constraint if we don't know correspondence.