METHOD FOR DETERMINING OCCUPANT POSITION TO ADAPT A RESTRAINT DEPLOYMENT OF A VEHICLE AND SYSTEM FOR DETERMINING AN OCCUPANT POSITION IN A VEHICLE TO BE USED IN A RESTRAINT DEPLOYMENT ADAPTION IN A VEHICLE

In a method and a system for determining positions of an occupant in a vehicle to adapt a restraint deployment of the vehicle (1), at least one 3D sensor system (21) is applied to capture a plurality of time-delayed image frames of the at least one occupant (3) in the vehicle (1). A Kalman filter (40) determines a filtered head position (33F), a filtered right shoulder position (34F), a filtered left shoulder position (35F), and a filtered middle spine position (37F) from the plurality of body points (32) and predicts state (st) evolution in case of occlusion or transitory low measurement quality. A calculation section (50) calculates a current 3D head position (33) and a current 3D chest position (36) which are used for the adaption of the restraint deployment of vehicle (1).