Fig. 2
From: Detecting the symptoms of Parkinson’s disease with non-standard video
An illustration of the HPS (left) and FTN (right) tasks with labeled keypoints and joint angles. The keypoints tracked during each task are named after the corresponding anatomical landmarks, and \(\theta _s\), \(\theta _e\), \(\theta _w\) and \(\theta _t\) the are the angles of the shoulder, elbow, wrist, and thumb joint, respectively