Abstract: In a method for manipulation of a movable object displayed in a television picture, the distance between the object and fixed basic positions is detected at a time t together with the distance between the object and a television camera in a known position. The object's position is converted to a position X,Y in the television camera's picture plane, generating therein a synthetic object which overlays the movable object and represents it in the television picture. In a method for generating a synthetic track which represents the path of a movable object displayed in television pictures during a period &thgr;, the path of the object is calculated on the basis of its detected positions, and these positions are used for generating a synthetic track which is displayed in a television picture in order to represent the path of the object in the period T.