Surface color perception under two illuminants: the second illuminant reduces color constancy.
Surface color perception under two illuminants: the second illuminant reduces color constancy.
复制标题
两种光源下的表面颜色感知：第二种光源降低了颜色恒定性。
DOI：
10.1167/3.5.4
复制
发表时间：
2003
影响因子：
1.8
通讯作者：
Shevell,StevenK
中科院分区：
文献类型：
--
作者：
Yang,JoongNam;Shevell,StevenK
本研究探讨在两种不同光源的场景中的颜色知觉。两个光源位于相对的角落，同时照射在具有不透明隔离墙的（模拟）场景上，该隔离墙控制每个光源照亮场景的程度。在第一个实验中，分隔壁的高度是变化的。这改变了每个光源到达墙对面物体的量。结果表明，颜色恒常性的程度下降时，一个区域的一侧的墙壁上的两个光源的线索，这表明来自第二光源的线索是有害的颜色恒常性。在后来的实验中，发现当来自第二光源的镜面高光提示被改变为与第一光源一致时，颜色恒定性得到改善。这证实了镜面高光对表面颜色感知的影响，并表明第一个实验中颜色恒定性的降低是由于两个光源的不一致（尽管物理上是正确的）提示。
This study investigates color perception in a scene with two different illuminants. The two illuminants, in opposite corners, simultaneously shine on a (simulated) scene with an opaque dividing wall, which controls how much of the scene is illuminated by each source. In the first experiment, the height of the dividing wall was varied. This changed the amount of each illuminant reaching objects on the opposite side of the wall. Results showed that the degree of color constancy decreased when a region on one side of the wall had cues to both illuminants, suggesting that cues from the second illuminant are detrimental to color constancy. In a later experiment, color constancy was found to improve when the specular highlight cues from the second illuminant were altered to be consistent with the first illuminant. This corroborates the influence of specular highlights in surface color perception, and suggests that the reduced color constancy in the first experiment is due to the inconsistent, though physically correct, cues from the two illuminants.