Kyungah Choi, a Ph.D. candidate at Color Lab recently published an article entitled “Assessment of white for displays under dark- and chromatic-adapted conditions” in the journal Optics Express, a top-ranked journal in the optics field. This study aims to derive an empirical model to predict the degree of whiteness as a function of position in color space via a series of dark-adapted and chromatic-adapted psychophysical experiments. This paper builds on and extends previous studies by observing the white perception of a self-luminous display presented in a real rather than a simulated environment, lit by illuminants with various chromaticities.

Abstract

This study aims to investigate the white perception of mobile display devices under dark-adapted and chromatic-adapted conditions. The white perception was modeled with error ellipses and bivariate Gaussian distributions. The dark-adapted white encompassed a rather large area centered around 7300 K, slightly above the Planckian locus. The chromatic-adapted whites were highly dependent on the ambient illuminant, and were not parallel to the Planckian locus. Combined, the white region encompassing 6179 to 7479 K in correlated color temperature and −0.0038 to 0.0144 in Duv was suggested. The results of this study are expected to be the basis for enhanced white appearance on mobile display devices.

Full text in Optics Express

https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-25-28945