About the rotation of shoulder, arm, and hand

[calx-git]

It seems that the current version of the xyz-to-bvh code cannot well handle the self-rotation of the shoulder, arm and hand. I am wondering how to utilize the limitted skeleton imformation (for example on Human 3.6M dataset) to estimate the self-rotation of the above-mentioned parts. Thanks!

[hujb48]

You can add the addition nodes like throat-2, throat-3 which are coincided with the throat node to control the left-shoulder and right-shoudler, respectively. And use throat node to control the neck's rotation.