Abstract
Self-luminous display devices are essential in various working environments, such as aircraft cockpits and the driver cab of vehicles and trains, where the external light environment varies drastically. Owing to the significant illumination changes, auto-adjusted display luminance based on ambient lighting is necessary for drivers to work efficiently and comfortably. This study proposes a display dimming model based on three dimensions of ergonomic testing, consisting of visual performance (VP), visual comfort (VC), and visual fatigue (VF). Five ambient illuminances, each combined with five display luminance levels, form a total of 25 conditions demonstrated in this experiment. Using a within-subject design, ten observers experienced all the combination conditions. The experiment employs the Anfimov table to test the VP, VC scale to evaluate VC, and VF scale to assess VF. Based on the experimental results, sub-models are constructed to clarify the characteristics of each dimension (VP, VC, and VF). Subsequently, the analytic hierarchy process is employed to construct an evaluation system by calculating the weight of each dimension in the total score. Finally, exponential fitting is utilized to build a wide-range display dimming model, which explicitly describes the inherent connection of complex light environment matching.
Highlights
Self-luminous display devices, such as computers, mobile phones, and tablets, have become indispensable in our daily lives
Hou et al.: Display dimming model characterized by three-dimensional ergonomic study will elaborate on the experimental results from three aspects: visual performance (VP), visual comfort (VC), and visual fatigue (VF)
VP refers to the value of index of mental capacity (IMC) in different conditions; the VC data are collected from the VC scale; the VF data come from the VF scale
Summary
Self-luminous display devices, such as computers, mobile phones, and tablets, have become indispensable in our daily lives. To enable efficient use when there are changes in the external light environment, the display must be equipped with an adaptive luminance adjustment algorithm, which matches the light environment and maintains the readability of information. This is important for visual performance (VP) and the effectiveness of human–computer interaction. A similar conclusion appears in Lin’s5 study, and the results showed that reading comprehension performance was better at 500 lx and 800 lx lighting than at 200 lx In addition to their impact on VP, ambient light and Optical Engineering
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