Color appearance depends on the variance of surround colors
Color appearance depends on the variance of surround colors
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DOI：
10.1016/s0960-9822(06)00372-1
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发表时间：
1997-11-01
期刊：
影响因子：
9.2
通讯作者：
MacLeod, DIA
中科院分区：
文献类型：
--
作者：
Brown, RO;MacLeod, DIA
背景资料：视觉场景中每个点的感知颜色取决于来自该点的光信号与来自场景周围区域的光信号之间的关系。在众所周知的同时颜色对比的现象中，改变物体周围环境的整体亮度或色调引起物体颜色的感知亮度或色调的互补偏移。颜色对比度被认为有助于颜色随照明变化的恒定性。结果：我们提出了一种新的同步颜色对比度，（即对比度和饱和度）而不是平均值引起测试点颜色的感知对比度和饱和度的互补偏移，对象在低对比度、灰色环境中比在高对比度、多色环境中显得更加生动和色彩丰富。结论：颜色外观不仅取决于环境的平均颜色，还取决于环境颜色关于平均值的分布。这种新形式的同时颜色对比度是不一致的颜色外观的各种模型，包括那些基于在受体水平的灵敏度调节，和那些复杂的环境对颜色外观的影响可以减少到适应光源或诱导从一个均匀的“等效环境”。它倾向于归一化每个视觉场景中感知到的颜色的色域，并且还可以在影响对比度的观看条件下有助于颜色恒定性。
Background: The perceived color at each point in a visual scene depends on the relationship between light signals from that point, and light signals from surrounding areas of the scene. In the well known phenomenon of simultaneous color contrast, changing the overall brightness or hue of an object's surround induces a complementary shift in the perceived brightness or hue of the object's color. Color contrast is thought to contribute to color constancy with changes in illumination.Results: We report a new type of simultaneous color contrast, in which changing only the variance (i.e. contrasts and saturations), but not the mean, of colors in a test spot's surround induces a complementary shift in the perceived contrast and saturation of the test spot's color, Objects appear much more vivid and richly colored against low-contrast, gray surrounds than against high-contrast, multicolored surrounds.Conclusions: Color appearance depends not just on the mean color of the surround, but also on the distribution of surround colors about the mean. This novel form of simultaneous color contrast is inconsistent with a variety of models of color appearance, including those based on sensitivity regulation at the receptor level, and those in which the effects of complex surrounds on color appearance can be reduced to adaptation to the illuminant or induction from a homogeneous 'equivalent surround'. It tends to normalize the gamut of perceived colors in each visual scene and may also contribute to color constancy under viewing conditions that affect contrast.