The physical additivity of optical-see-through (OST) augmented reality (AR), where display and the real-world overlay with each other, impacts its color appearance. We explored this unique dynamic by looking at the effect of background correlated color temperature (CCT) on AR color appearance with a color matching experiment between a prototype OST-AR RGB system and daylight spectrum reproduction. Different background CCT, luminance levels, and two stimulus types [simulated two-dimensional (2D) disk and three-dimensional (3D) cube] were examined. We found that when the background color is inconsistent with the stimulus providing conflicted cues, matched colors in AR shifted towards the background. The luminance matched on the 3D cube is higher than the 2D disk, suggesting the impact of context on the AR appearance. A controlled metameric matching group between daylight reproduction and LCD or CRT did not show the shift, indicating that the appearance shift is not due to the RGB-spectrum metameric matching, but due to RGB foreground-spectral background interaction beyond simple additivity. How perceptual weighting on the foreground and background is modified to predict the appearance as a function of additivity is discussed.

中文翻译：

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增强现实异构体匹配中的颜色外观变化

光学透视（OST）增强现实（AR）的物理可加性（其中显示和现实世界彼此重叠）会影响其颜色外观。我们通过在原型OST-AR RGB系统与日光光谱再现之间进行色彩匹配实验，研究了背景相关色温（CCT）对AR颜色外观的影响，从而探索了这种独特的动态效果。研究了不同的背景CCT，亮度水平和两种刺激类型[模拟的二维（2D）光盘和三维（3D）立方体]。我们发现，当背景颜色与提供冲突提示的刺激不一致时，AR中匹配的颜色会向背景偏移。3D立方体上匹配的亮度高于2D光盘，表明上下文对AR外观的影响。日光再现和LCD或CRT之间的受控的同色异谱匹配组没有显示偏移，表明外观变化不是由于RGB光谱同色异谱匹配，而是由于除了简单可加性之外的RGB前景-光谱背景相互作用。讨论了如何修改前景和背景上的感知加权，以预测外观与可加性的关系。