From: Development and evaluation of wireless 3D video conference system using decision tree and behavior network
Front (4)
()×(Front Direction)
One hand (26)
()×(Only Right hand),
()×(Right +Left hand)
Two hands (23)
()×(Front Direction),
()×(Right +Left Direction)
Head (10)
)×(Front Direction)
)×(Only Right hand),
)×(Right +Left hand)
)×(Front Direction),
)×(Right +Left Direction)
)×(Right +Left Direction)