True White Point for Television Screens Across Different Viewing Conditions

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This paper proposes the optimal white point settings of consumer televisions observed in different viewing conditions. The ratings from visual experiments were modeled with a bivariate Gaussian distribution to predict the optimal white points. Under dark surround conditions, where there is no effect of lighting chromaticity, the averaged optimal white point was located at a correlated color temperature of 7346 K and a Duv of -0.0015. The optimal white point was shifted toward a higher color temperature compared to the current standards. The results also indicated that current white point settings of major television manufacturers are too bluish. Neither televisions that meet the current standards nor televisions in the market would appear as true white under the viewing conditions employed in this paper. Moreover, the optimal white point depended largely on viewing conditions. Image content and ambient lighting conditions were observed to be important factors that influence the perception of the white point. The research therefore proposed to automatically change the white point of the display based on the image content and the real-time measurements of the surrounding ambient light falling on the screen. Ultimately, this paper might be of interest to the industry as a basis for future deliberations on target white points for consumer televisions designed to provide a better color appearance.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2018-08
Language
English
Article Type
Article
Keywords

UNIQUE WHITE; CHROMATICITY; ILLUMINATION; PERCEPTION; SENSATION; LIGHT; MODE

Citation

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, v.64, no.3, pp.292 - 300

ISSN
0098-3063
DOI
10.1109/TCE.2018.2867828
URI
http://hdl.handle.net/10203/246240
Appears in Collection
ID-Journal Papers(저널논문)
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