The meaning of the vector of a pose in HumanML3D and KIT-ML.

[HitBadTrap]

Hi! I'm confused about what each dimension of the 263-dimension vector of a pose in HumanML3D and the 251-dimension vector of a pose in KIT-ML represent(e.g., which dimensions represent the head and foot, etc.). Could you provide detailed information or relevant links?

Thanks.

[HitBadTrap]

SMPL_JOINTS = {'hips' : 0, 'leftUpLeg' : 1, 'rightUpLeg' : 2, 'spine' : 3, 'leftLeg' : 4, 'rightLeg' : 5,
                'spine1' : 6, 'leftFoot' : 7, 'rightFoot' : 8, 'spine2' : 9, 'leftToeBase' : 10, 'rightToeBase' : 11, 
                'neck' : 12, 'leftShoulder' : 13, 'rightShoulder' : 14, 'head' : 15, 'leftArm' : 16, 'rightArm' : 17,
                'leftForeArm' : 18, 'rightForeArm' : 19, 'leftHand' : 20, 'rightHand' : 21}

like above

[GracefulMan]

it also confused me, so i made a table for HumanML3D dataset. for other dataset, you can also use following table for ref:

Feature	Dimension	Shape	Meaning	Units
Root Rotation Velocity (Y-axis)	data[..., 0]	(seq_len-1, 1)	Root rotational velocity around the Y-axis (rotation speed of root joint, usually pelvis)	rad/s
Root Linear Velocity (X, Z)	data[..., 1:3]	(seq_len-1, 2)	Root velocity along the X and Z axes (horizontal movement of pelvis)	m/s
Root Y Position	data[..., 3]	(seq_len-1, 1)	Vertical position (height) of the root joint (usually pelvis)	meters (m)
Joint Positions (RIC)	data[..., 4:4+((joints_num-1)*3)]	(seq_len, (joints_num-1)*3)	3D positions for each joint (excluding the root), (X, Y, Z) coordinates for each joint	meters (m)
Joint Rotations (Continuous 6D)	data[..., 4+((joints_num-1)*3):4+((joints_num-1)*3)+(joints_num-1)*6]	(seq_len, (joints_num-1)*6)	6D continuous rotation representation for each joint (excluding root joint)	unit-less (normalized)
Joint Velocities	data[..., 4+((joints_num-1)*3)+(joints_num-1)*6:4+((joints_num-1)*3)+(joints_num-1)*6+(joints_num*3)]	(seq_len-1, joints_num*3)	The velocity of each joint in 3D space, relative to the global positions	m/s
Foot Contact	data[..., 4+((joints_num-1)*3)+(joints_num-1)*6+(joints_num*3):]	(seq_len, 4)	Contact states for left foot, right foot, left toe, and right toe (binary values)	binary (0 or 1)