How to convert MANO pose parameters to UHM pose parameters?

[ZhaoLizz]

Hi! Thanks for sharing this great work.

I’m trying to use MANO pose parameters — specifically global_orient with shape (1, 3) and poses with shape (15, 3) — to drive the UHM model. However, UHM appears to use a different skeleton structure from MANO. According to the provided driving_poses files, the parameter formats are different:

# UHM mode: 
        # ==>> root_pose.shape: torch.Size([1, 3, 3])
        # ==>> hand_pose.shape: torch.Size([1, 23, 3, 3])
        # ==>> trans.shape: torch.Size([1, 3])
# MANO mode: 
        # ==>> root_pose.shape: torch.Size([1, 3])
        # ==>> hand_pose.shape: torch.Size([1, 45])
        # ==>> trans.shape: torch.Size([1, 3])

May I ask how to convert MANO pose parameters from another dataset into the UHM pose representation?
Any guidance would be greatly appreciated. Thank you!