Lateral Interactions in Brightness and Color Perception

在人类视觉中，尚不清楚视觉系统如何维持视觉的感觉。 在各种照明条件下的相对亮度。 这项工作 利用了一种使用“感应”的方法，其中相邻场影响 目标场的感知质量;例如，深色区域旁边的灰色区域 背景看起来很亮，而同样的灰色区域在浅色背景下 看上去很黑。 无论整体照明是高还是低，这种错觉都有效 程度. 这里使用了一种基于此属性的新技术，其中目标 是一条带，在带的每一边都有暗条和亮条 形成光栅，该光栅引起亮度变化的虚幻光栅， 出现在带本身，这真的有一个单一的恒定亮度。 标准匹配技术被用来衡量依赖 效果是对对比度的机制，以及对全局（宽场）与局部 （窄场）空间亮度机制。 这项工作的结果将有助于解决视觉中的一个基本问题， 将产生超越视觉神经科学的影响， 一般，并可能是重要的视觉显示器的设计，为许多 应用.

In human vision, it is not clear how the visual system maintains the sense of relative brightness under widely varying conditions of lighting. This work exploits an approach using "induction", where a neighboring field affects the perceptual quality of a target field; for example, a gray area next to a dark background looks bright, while the same gray area against a light background looks dark. This illusion works whether the overall illumination is at high or low levels. A novel technique based on this property is used here, where the target is a band and on each side of the band there are both dark and light bars forming a grating, which induce an illusory grating of varying brightness to appear within the band itself, which really has a single constant brightness. Standard matching techniques are used to measure how of dependent the effects are on mechanisms for contrast, and on global (wide-field) vs. local (narrow field) spatial brightness mechanisms. Results from this work will help unravel a fundamental problem in vision, and will have an impact beyond visual neuroscience to perceptual physiology in general, and could be important in the design of visual displays for many applications.