Transparent effect on the gray scale perception of a transparent OLED display.

Hyosun Kim,Youngshin Kwak,Young-Jun Seo

doi:10.1364/oe.26.004075

Abstract

Gray scale perception of transparent OLED displays was explored. The difference in luminance between transparent and non-transparent stimuli in the overall gray range was compared. The transparent effect appeared in gray scale perception. The range of the transparent effect was determined experimentally. To explore the practical application of this effect, we proposed a new tone-curve based on the transparent effect. In the preference experiment, participants indicated a higher preference score for the new tone-curve. This implied that the transparent effect is valid and applicable to real situations.

Highlights

The biggest distinguishing feature of transparent displays, compared to normal nontransparent displays, is the ability to observe surroundings behind the panel
The first trend showed that a transparent stimulus was perceived brighter than a non-transparent one under 250% luminance of the transmitted light through the transparent display
We conducted an experiment on the gray scale perception of a transparent OLED display

Summary

Introduction

The biggest distinguishing feature of transparent displays, compared to normal nontransparent displays, is the ability to observe surroundings behind the panel. This, in turn, led to a few reports that proposed applying additional structures to partially block the exterior lights [5,6] Regardless of these conflicting approaches to study transparent displays, it is necessary to start with a fundamental research on human perception of the images on a transparent display in ambient surround conditions, in order to improve the perceived image quality. When perceiving an image on a transparent OLED display under an ambient surround condition, the total amount of luminance entering a person’s eyes is the sum of the selfluminous light from the images and surround luminance from ambient light transmitted through the display.

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