Although the Kinect proved to be very accurate in tracking
coarse movements, when limbs were pointed directly at the
camera, or occluded by the body, the overall tracking was
severely penalised. The tracking of hands and feet was not
accurate enough to track some of the mistakes participants
suggested. Also, due to the limitations of the tracking system
, we limited the scope of this work to movements where the
user was standing up and facing the camera, but there are a
wide variety of movements in which the user is in positions
that can’t be tracked by the Kinect. Another limitation imposed
by the tracking system is that we treat each bone as a
vector in the 3D space, without taking into account the rotation
of the bone around its length. This means that there is
currently no support for detecting rotations such as pronation
and supination of the wrist.