Video Viewing Preferences for HDR Displays Under Varying Ambient Illumination
In our work we examine these issues by conducting two user studies. In each study, subjects watched video content on an HDR display in several different ambient illumination environments, and were asked to adjust the brightness and black level of the display to their preference. Subjects were also given questionnaires to document their observations and subjective preferences as well as any visual fatigue they may have experienced. We found that subjects experienced minimal visual fatigue, and also found statistically significant differences in preferred display settings under different ambient lighting conditions.
The results of this study could be the first step in designing HDR television sets with automatic brightness controls to provide a more pleasurable viewing environment under a variety of ambient viewing conditions.
In the current study we have focused on live action content without drastic illumination effects. This choice was based on the need to limit the number of parameters in the study. Now that visual fatigue has been ruled out and we have gained a better understanding of brightness and contrast preferences under different ambient light levels, we would like to conduct further studies that analyze the effect of more extreme content, such as animated content and very dark or highly stylized live action footage.