help with converting 6D SAMPL to CHAMP input

[jitsm]

Hi, I'm taking the output of a motion diffusion model (24 SMPL joints; 6D coordinate system and converting it to the a champ motion input.

I am taking two steps

1. dropping the the first point and inputting it as global orientation
2. converting from 6D to rotation matrices. (gram schmidt process)

However, some conversion is wrong, and the angles look wrong. Does anyone have any suggestions?

This is the screenshot of the incorrect conversion:

This is what what it should look like:

[Leoooo333]

Hi @jitsm , we have released our Blender scripts for SMPL smooth here. You can also run it as a script inside Blender windows step by step to visualize the result. Hope it helps👋