Relative area and relative luminance combine to anchor surface lightness values
Relative area and relative luminance combine to anchor surface lightness values
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DOI：
10.3758/bf03206896
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发表时间：
1999-07-01
期刊：
影响因子：
--
通讯作者：
Gilchrist, AL
中科院分区：
文献类型：
--
作者：
Li, XJ;Gilchrist, AL
通过将观察者置于不透明的丙烯酸半球内，在仅由两个区域组成的简单视野中测试亮度感知的锚定。测试了并排和中心/环绕配置。这些结果推翻了Gilchrist和Bonato（1995）最近的观点，即周围的环境往往呈现白色，表明锚定涉及相对亮度和相对面积。只要较暗区域的面积等于或小于较亮区域的面积，相对面积在锚定中就不起作用。只有相对亮度控制锚定：较亮的区域显示为白色，较暗的区域相对于该值被感知。当较暗区域的面积变得大于较亮区域的面积时，相对面积开始起作用。随着较暗区域变大并且相对面积从较亮区域向较暗区域移动，较暗区域的外观向白色移动，而较亮区域的外观向亮度移动。这一迄今未被承认的规则与几乎所有以前关于亮度和亮度的面积效应的报道是一致的。这反过来又表明，在亮度感应、亮度对比、亮度同化和光度感知中，关于面积效应的早期工作可以用一些简单的锚定规则来理解。
The anchoring of lightness perception was tested in simple visual fields composed of only two regions by placing observers inside opaque acrylic hemispheres. Both side-by-side and center/surround configurations were tested. The results, which undermine Gilchrist and Bonato's (1995) recent claim that surrounds tend to appear white, indicate that anchoring involves both relative luminance and relative area. As long as the area of the darker region is equal to or smaller than the area of the lighter region, relative area plays no role in anchoring. Only relative luminance controls anchoring: The lighter region appears white, and the darker region is perceived relative to that value. When the area of the darker region becomes greater than that of the lighter region, relative area begins to play a role. As the darker region becomes larger and relative area shifts from the lighter region to the darker region, the appearance of the darker region moves toward white and the appearance of lighter region moves toward luminosity. This hitherto unrecognized rule is consistent with almost all of the many previous reports of area effects in lightness and brightness. This in turn suggests that a wide range of earlier work on area effects in brightness induction, lightness contrast, lightness assimilation, and luminosity perception can be understood in terms of a few simple rules of anchoring.