Analysis of color volume of multi-chromatic displays using gamut rings
Analysis of color volume of multi-chromatic displays using gamut rings
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DOI：
10.1002/jsid.852
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发表时间：
2019-12-13
影响因子：
2.3
通讯作者：
Heckaman, Rodney L.
中科院分区：
文献类型：
--
作者：
Masaoka, Kenichiro;Jiang, Fu;Heckaman, Rodney L.
有人声称，多色显示器可以实现更宽的色域，通过使用额外的高度饱和的二次色通道。然而，也有其他的说法，这些显示器失去亮度和/或色彩饱和度在较亮的水平。这些明显不同的观点在显示行业和标准制定组织中引起了一些争议。本研究考察了各种模拟和测量的多色（有时被错误地称为“多原色”）显示的色域体积，使用白色和/或二次色通道的组合，如青色、品红和黄色。此外，一个二维色域表示，称为“色域环，”被介绍来说明，增加非原色的光学色彩通道，以三色（RGB）显示可以导致在较高的亮度水平显着降低色度。额外的饱和颜色通道只能在较暗的水平上增加其色调周围的色域体积。结果还证实了比较彩色光输出和白光输出的有效性，以揭示多色显示器的高峰值白光和彩色图像亮度之间的设计权衡。
There are claims that multi-chromatic displays can achieve a wider color gamut by the use of additional highly saturated secondary color channels. However, there are other claims that these displays lose lightness and/or color saturation at brighter levels. These apparently divergent views have led to some controversy in the display industry and at standard setting organizations. This study examines the color gamut volume for a variety of simulated and measured multi-chromatic (sometimes incorrectly referred to as "multi-primary") displays using combinations of white and/or secondary color channels, such as cyan, magenta, and yellow. Furthermore, a two-dimensional gamut representation, referred to as "gamut rings," is introduced to illustrate that the addition of nonprimary optical color channels to a trichromatic (RGB) display can result in a significant decrease in the chroma at higher lightness levels. The additional saturated color channels can increase the gamut volume only around their hues at darker levels. The results also confirm the validity of comparing the color light output and white light output for revealing the design trade-offs between the high-peak white and the color-image brightness for multi-chromatic displays.