骨架数据预处理方法

一. NTU论文中的处理方法

We translate them to the body coordinate system with its origin on the “middle of the spine” joint (number 2 in Figure 1), followed by a 3D rotation to fix the X axis parallel to the 3D vector from “right shoulder” to “left shoulder”, and Y axis towards the 3D vector from “spine base” to “spine”. The Z axis is fixed as the new X × Y. In the last step of normalization, we scale all the 3D points based on the distance between “spine base” and “spine” joints. In the cases of having more than one body in the scene, we transform all of them with regard to the main actor’s skeleton.

代码实现

1.1. NTU骨架数据预处理

骨架数据预处理方法

原文：https://www.cnblogs.com/picassooo/p/14051840.html