Spline Method Draft
B-splines in machine learning
https://www.duo.uio.no/bitstream/handle/10852/61162/thesisDouzette.pdf
四元数与三维旋转
https://krasjet.github.io/quaternion/quaternion.pdf
SMPL: A Skinned Multi-Person Linear Model
https://github.com/YunYang1994/OpenWork/releases/download/v1.0/SMPL-document.pdf
Splines