Visibility Evalution of Vehicle Display and Its Application

Abstract

In recent years, as vehicle technology has advanced, the use of on-board display devices has increased. In particular, vehicles with navigation systems are rapidly increasing in use. With such systems, when a driver operates a vehicle, the driver detects and judges road situations while looking at the route-guided map on the navigation system display. Thus, from the safety point of view, improvement of visibility of the navigation system is very important. We have developed a noncontact gaze duration measurement system for on-board navigation systems. The system uses a TV camera on the dashboard to detect the driver's eye movements that are illuminated by infrared rays. In addition, the usefulness of the navigation system with voice route guidance compared with a conventional nonvoice system is demonstrated using measurements based on this method in the daytime and at night time. It is clear that the voice guidance is effective in decreasing gaze duration.