Fig. 3
From: Motion tracking and gait feature estimation for recognising Parkinson’s disease using MS Kinect
Visualisation of MS Kinect data presenting a the evolution of the z-coordinate of the COM in time with the median values and standard deviations used for the detection of gross errors and outliers rejection, b the relative spatial evolution of the left and right leg centres after the removal of the skeleton mass centre of each frame, c the temporal evolution of the right and left legs movement in three-dimensional space, and d the distances between the leg centres for a selected walk segment of a normal individual