is there a way to obtain the joints position?

[visonpon]

Hi @davrempe, thanks for your great work and I have got some good results based on your code.
I also would like to know how to get and save joints especially the root position, hope you can give some advice, thanks~

[davrempe]

Yes, joints can be extracted from the output BVH files using skeleton_fitting/ik/BVH and skeleton_fitting/ik/Animation. Concretely, for the example data (dance1) which has final results in dance1_ybot_durations.bvh, you can use something like:

sys.path.extend(['skeleton_fitting/ik'])
import BVH
import Animation

anim, _, _ = BVH.load('path/to/dance1_ybot_durations.bvh')
joint_pos = Animation.positions_global(anim)

You can see a simliar example in the visualization script where I find the mean root position over time. To get information about joint ordering for the character you are using, see this script.

[visonpon]

Hi@davrempe, thanks for your responce, I got another question that hope you can help.
In the character_info_utils.py,there are joints' index mapping between different models, I want to try the mapping between my own T pose and the combined model, but I don't know how to do it since the mapping seems like a manual design, can you give some more details about this?