Dickmanns 1989a : In the dynamic vision concept exploiting integral spatio-temporal world models each object is assigned a motion state. In order to be able to determine the complete spatial state vector recursively, dynamical models in conjunction with 3D-shape models and the laws of perspective projection are used. The type of dynamical model required for adequately modeling an object is utilized for developing the distinction between subjects and objects. Subjects require the introduction of the notion of an interne ‘mental’ state for an approximate description of their behavior.