Preliminary investigation to determine the feasibility of utilizing the 1962 Mackworth head-mounted eye-marker camera in both a simulated and real-world driving situation indicated that: (1) the camera limits scene width to a total of 25° when S looks straight ahead, (2) eye-marker spot drops below center as distance from original calibration location is increased, (3) an auxiliary boresight device is required to make the initial eye-spot calibration quickly and efficiently, (4) ambient light of real-world hampers initial calibration procedures, (5) interior height of automobile limits heights of Ss, (6) film and filter selection varies from real-world to simulator.
