Color and brightness contrast effects as a function of spatial variables
Color and brightness contrast effects as a function of spatial variables
复制标题
颜色和亮度对比度效果作为空间变量的函数
DOI：
10.1016/0042-6989(75)90231-x
复制
发表时间：
1975
期刊：
影响因子：
1.8
通讯作者：
J. Armington
中科院分区：
文献类型：
--
作者：
E. Yund;J. Armington
在圆形中心-环绕刺激显示器的中心测量三种颜色组合和一种(非彩色)亮度组合的对比度效果。对于每种组合，使用连续的匹配过程来确定一系列不同中心和周围大小的对比效果的大小。对比度受显示器尺寸的影响符合预期；当周围较大、中心较小时，对中心的影响最大。对比度大小根据四个理论选择的包络绘制：(1)环绕宽度，R1−R2；(2)环绕面积，R12−R22；(3)面积比，(R12−R22)/R22；以及(4)边缘距离表达式1/R2−1R1，其中R2是中央测试区的半径，R1是环绕的外半径。对于每种颜色组合，图形和相关分析都表明，对比幅度与边缘距离表达的关系比与其他空间表达的关系更密切。这一结果支持基于两个假设的边缘距离模型：(1)刺激物中的边缘和视觉系统中的边缘检测器是颜色和亮度的重要决定因素；以及(2)与较远的边缘相比，离点较近的边缘对该点处的颜色和亮度的确定贡献更大。
The contrast effect was measured at the center of a circular center-surround stimulus display for three color combinations and one (non-colored) brightness combination. For each combination, the magnitude of the contrast effect was determined for a series of different center and surround sizes using consecutive matching procedures. The amount of contrast was influenced by the dimensions of the display in the expected way; the effect on the center was greatest when the surround was large and the center was small. The contrast magnitudes were plotted against four theoretically selected abscissae: (1) surround width,R1−R2; (2) surround area,R12−R22; (3) area ratio, (R12−R22)/R22; and (4) edge-distance expression 1/R2−1R1, whereR2is the radius of the central test area andR1is the outer radius of the surround. For each color combination, both graphical and correlational analyses demonstrated that contrast magnitude is more closely related to the edge-distance expression than to the other spatial expressions. This result provides support for an edge-distance model based on two assumptions: (1) that edges in the stimulus, and edge detectors in the visual system, are the important determinants of color and brightness; and (2) that edges closer to a point contribute more to the determination of the color and brightness at that point than do edges that are further away.