Research on User Transparency Perception Based on Mixed Reality

Abstract

The user's visual perception in mixed reality (MR) includes the combination of the real physical environment and virtual objects rendered in an optical see-through head mounted display (OST-HMD), so the presentation of MR rendering objects will be affected by the light from the real world; thus, rendering effect deviates from the original design intent. This paper focuses on the user's perception of transparency in mixed reality and the impact of ambient illumination on the perception of transparency in mixed reality. We conducted a psychophysical experimental study and recruited 20 participants to recognize the transparency of virtual objects under two kinds of ambient illumination via Microsoft HoloLens and select the corresponding value in the slider. Our analysis shows that the transparency of virtual objects will be underestimated when the ambient illumination is high. Additionally, the experiments also found that as the magnitude of transparency increases, the perception of transparency will be underestimated. This study can provide a reference for the design of MR interface transparency coding.