Abstract
We examine the relationships between brightness of on-vehicle display panels and visibility of both outside scene and display panels themselves. In experiments, subjects are instructed to perform target detection task with observing night driving scene (main LCD display) and target discrimination task (sub LCD displays) in alternate shifts with four different brightness setting conditions of sub displays, including gaze-reactive condition. As a result, Bright-Off condition (always high brightness) gives worst performance and, in contract, gaze-reactive control improves performance for detection task. Multi-level control of gaze-reactive brightness gives best performance. These results suggest that the impact of adaptation can be relaxed by using gaze-reactive brightness control.
