Skip to main content
. 2015 Aug 14;15(8):20097–20114. doi: 10.3390/s150820097

Figure 4.

Figure 4

A depiction of the skeleton data gathered by the Kinect with the features we extracted from that data. The limbs between the neck (N), the shoulder (S), the elbow (E), and wrist (W) are converted to 3D unit vectors. The elbow angle is calculated based on the vectors of the forearm and upper arm.