The goal of this study is to develop quantitative metrics for evaluating color tracking and gray tracking in a color display. Chromaticity consistency of red, green, or blue shades is color tracking, while chromaticity consistency of gray shades is gray tracking. Gray tracking and color tracking are the most important colorimetric responses of a color display because they directly indicate the color calibration quality and can therefore be used to compare color performance between displays. Two metrics, primary purity and gray purity, are defined to measure the color shift of the primary shades and gray shades of a color display, respectively. The area under the curves of primary purity and gray purity can then represent the quality of color tracking (C_AUC) and gray tracking (G_AUC), respectively. Fifteen displays including medical, professional-grade, consumer-grade, mobile, and special displays were tested to compare their C_AUC and G_AUC. The OLED displays have the greatest C_AUC values. The medical and professional-grade displays have the greatest combinations of C_AUC and G_AUC values. Most consumer-grade displays have lower C_AUC and G_AUC values, but some show better gray tracking than color tracking. The special displays exhibit particularly poor color and gray tracking.

中文翻译：

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彩色显示器中颜色跟踪和灰度跟踪的定量评估

本研究的目标是开发用于评估彩色显示器中的颜色跟踪和灰度跟踪的定量指标。红色、绿色或蓝色阴影的色度一致性是颜色跟踪，而灰色阴影的色度一致性是灰色跟踪。灰度跟踪和颜色跟踪是彩色显示器最重要的色度响应，因为它们直接表明颜色校准质量，因此可用于比较显示器之间的颜色性能。两个指标，初级纯度和灰度纯度，分别被定义为测量彩色显示器的主色调和灰度色调的色移。初级纯度和灰度纯度曲线下的面积可以分别代表颜色跟踪（C_AUC）和灰度跟踪（G_AUC）的质量。测试了包括医疗、专业级、消费级、移动和特殊显示器在内的 15 个显示器，以比较它们的 C_AUC 和 G_AUC。OLED 显示器具有最大的 C_AUC 值。医疗级和专业级显示器具有最大的 C_AUC 和 G_AUC 值组合。大多数消费级显示器具有较低的 C_AUC 和 G_AUC 值，但有些显示器显示出比颜色跟踪更好的灰度跟踪。特殊显示器表现出特别差的颜色和灰色跟踪。