Hi everyone,
I have a question about Mediapipe Hands. In its output MULTI_HAND_WORLD_LANDMARKS, it says that 'Each landmark is composed of x, y, and z: real-world 3D coordinates in meters with the origin at the hand’s approximate geometric center.' What the geometric center is? how to calculate that? Besides, how is the orientation defined (which coordinate is finger joint x, y, z in)?