Surface color from boundaries: a new 'watercolor' illusion
Surface color from boundaries: a new 'watercolor' illusion
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DOI：
10.1016/s0042-6989(01)00105-5
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发表时间：
2001-09-01
期刊：
影响因子：
1.8
通讯作者：
Spillmann, L
中科院分区：
文献类型：
--
作者：
Pinna, B;Brelstaff, G;Spillmann, L
一条彩色线侧面的一个较暗的边界将出现同化其颜色到封闭的白色地区超过45度的距离（水彩效果），这种着色是均匀的，并在100毫秒内完成。与地面对比度不同的弯曲诱导线通常比粗的、直的诱导线更有效。和等亮度线。蓝色和红色线条诱导最强的效果，但水彩蔓延也可以看到与绿色和黄色。在白色背景上，颜色扩散比在彩色背景上强。灰色或黑色背景。当在两条诱导线之间插入一个狭窄的白色区域（间隙）时，很少或没有颜色被感知。然而，彩色点的链而不是连续的线足以产生扩散。边缘诱导的颜色也被观察到时，两条彩色线提出dichoptically，这表明皮质起源。这里描述的水彩效果可以通过将表面颜色赋予到封闭区域上来增强图形-背景分离，并且促进远距离刺激元素之间的分组。作为一个分组因素，水彩色彩赢得了接近。同化的颜色传播可能会出现在两个步骤：第一，削弱轮廓之间的差异激活边缘细胞（局部扩散）的横向抑制;第二，无障碍的颜色流到封闭的区域（全球扩散）。(C)2001爱思唯尔科技有限公司版权所有。
A colored line flanking a darker border will appear to assimilate its color onto the enclosed white area over distances of up to 45 deg (the Watercolor Effect), This coloration is uniform and complete within 100 ms. We found that thin (6 arcmin). winding inducing lines with different contrasts to the ground are generally more effective than thick, straight. and equiluminant lines. Blue and red lines induce the strongest effects, but watercolor spreading may also be seen with green and yellow. On a white background, color spreading is stronger than on chromatic. gray or black backgrounds. Little or no color is perceived when a narrow white zone (gap) is inserted in between the two inducing lines. However, chains of colored dots instead of continuous lines suffice to produce spreading. Edge-induced color is also observed when the two colored lines are presented dichoptically, suggesting a cortical origin. The Watercolor Effect described here may serve to enhance figure-ground segregation by imparting surface color onto the enclosed area, and to promote grouping between distant stimulus elements. As a grouping factor, watercolor coloration wins over proximity. Assimilative color spreading may arise in two steps: First, weakening of the contour by lateral inhibition between differentially activated edge cells (local diffusion); and second, unbarriered flow of color onto the enclosed area (global diffusion). (C) 2001 Elsevier Science Ltd. All rights reserved.