3D keypoints, absolute or relative?

[Billccx]

Hello!

I am wondering is the 3D joint coordinate of human pose represented in absolute or relative coordinate?

If it is absolute coordinate, what is the unit of measurement? centimeter or something else?

I tried to print on sample from 171204_pose1, body3DScene_00019700.json, the result is as follow:

Neck :  (6.39285,-3.20938,137.845)
Nose :  (7.20293,-22.0074,154.553)
BodyCenter :  (6.02044,-4.75685,92.682)
lShoulder :  (-10.4839,-4.04341,138.424)
lElbow :  (-18.3504,-1.25487,109.759)
lWrist :  (-20.1056,-11.5938,86.3398)
lHip :  (-3.34428,-3.35045,89.6674)
lKnee :  (-2.01326,-6.83071,50.1423)
lAnkle :  (2.10287,-1.44332,10.3239)
rShoulder :  (23.8969,-0.661849,137.04)
rElbow :  (26.4369,8.73708,108.53)
rWrist :  (26.9802,4.88228,82.2448)
rHip :  (15.3852,-6.16324,95.6965)
rKnee :  (7.70356,-44.2126,86.6633)
rAnkle :  (7.58199,-29.5983,48.4186)
rEye :  (4.42264,-20.2754,158.39)
lEye :  (0.0292003,-10.6256,158.845)
rEar :  (10.4227,-20.3179,157.9)
lEar :  (15.4756,-11.2365,157.656)

It seems that the height of leye is 158cm? Is it right?

I am looking forward to your reply and thanks in advance!

[AlexP-Coding]

I am also interested in the answer!