How is smplx2smpl.pkl obtained?

[nehc0]

In the utils downloaded from here:

BEDLAM/fetch_demo_data.sh

Line 39 in ebf8bb1

wget --post-data "username=$username&password=$password" 'https://download.is.tue.mpg.de/download.php?domain=bedlam&resume=1&sfile=utils.zip' -O './data/utils.zip' --no-check-certificate --continue

There's a smplx2smpl.pkl file which contains a matrix to linearly regress the smpl vertices from smplx vertices. I wonder how is the matrix obtained. Is it obtained in part of this work or adopted from another work?

[personal-coding]

@nehc0 These are found here - https://smpl-x.is.tue.mpg.de/download.php and https://github.com/vchoutas/smplx/tree/main/transfer_model