VIRTUELLE WELTEN + VIRTUELLE REALITÄT + CYBERSPACE (COMPUTERSIMULATION); VIRTUAL ENVIRONMENTS + VIRTUAL REALITY + CYBERSPACE (COMPUTER SIMULATION); VIDEO CAMERAS (VIDEO ENGINEERING); HUMAN-COMPUTER INTERACTION, HCI; REAL-TIME SYSTEMS + EMBEDDED SYSTEMS (COMPUTER SYSTEMS); ECHTZEITSYSTEME + EINGEBETTETE SYSTEME (COMPUTERSYSTEME); VIDEOKAMERAS (VIDEOTECHNIK)