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User-preferred color temperature adjustment for smartphone display under varying illuminants

机译：用户首选的色温调节，用于在不同光源下的智能手机显示屏

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The study aims to investigate the user-preferred color temperature adjustment for smartphone displays by observing the effect of the illuminant's chromaticity and intensity on the optimal white points preferred by users. For visual examination, subjects evaluated 14 display stimuli presented on the Samsung Galaxy S3 under 19 ambient illuminants. The display stimuli were composed of 14 nuanced whites varying in color temperature from 2900 to 18,900 K. The illuminant conditions varied with combinations of color temperature (2600 to 20,100 K) and illuminance level (30 to 3100 lx) that simulated daily lighting experiences. The subjects were asked to assess the optimal level of the display color temperatures based on their mental representation of the ideal white point. The study observed a positive correlation between the illuminant color temperatures and the optimal display color temperatures (r = 0.89, p ＜ 0.05). However, the range of the color temperature of the smartphone display was much narrower than that of the illuminants. Based on the assessments by 100 subjects, a regression formula was derived to predict the adjustment of user-preferred color temperature under changing illuminant chromaticity. The formula is as follows: [Display T_(cp) = 6534.75 log (Illuminant T_(cp)) - 16304.68 (R~2 = 0.87, p ＜ 0.05)]. Moreover, supporting previous studies on color reproduction, the effect of illuminant chromaticity was relatively weaker under lower illuminance. The results of this experiment could be used as a theoretical basis for designers and manufacturers to adjust user-preferred color temperature for smartphone displays under various illuminant conditions.
机译：该研究旨在通过观察光源的色度和强度对用户偏爱的最佳白点的影响，来研究智能手机显示屏用户偏爱的色温调节。为了进行视觉检查，受试者评估了在19种环境光源下在Samsung Galaxy S3上呈现的14种显示刺激。显示刺激由色温从2900到18,900 K的14种细微的白色组成。照明条件随色温（2600到20,100 K）和照度水平（30到3100 lx）的组合而变化，它们模拟了每天的照明体验。要求受试者根据他们对理想白点的心理表现来评估显示色温的最佳水平。该研究观察到光源色温与最佳显示色温之间呈正相关（r = 0.89，p ＜0.05）。但是，智能手机显示屏的色温范围比光源的色温范围要窄得多。基于100位受试者的评估，得出了回归公式，以预测在光源色度变化时用户首选色温的调整。计算公式如下：[显示T_（cp）= 6534.75 log（光源T_（cp））-16304.68（R〜2 = 0.87，p ＜0.05）。此外，为支持先前的色彩再现研究，在较低照度下光源色度的影响相对较弱。该实验的结果可为设计人员和制造商在各种照明条件下调整用户首选的智能手机显示器色温提供理论依据。

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