Thank you for this great work and making the code publicly available!

I'm running your evaluation code and there's certain parts that I don't understand. Specifically:

• Why do you rotate the 3DPW poses by 90 degrees around the x-axis (as found here)? Is this a 3DPW thing or should this be done with all SMPL poses?
• What exactly does the function convert_traj_world2heading do in get_aligned_orient_trans?

Thanks for your help!