Study on simultaneous contrast and constancy in vision by multidimensional analysis of visual properties.

视频帧缓冲系统是为精确的心理物理显示而设计的，并且开发了将该系统用于此角色的技术。该装置能够显示二维图像，并精确控制对比度、亮度、显示时间和颜色。一种广泛接受的表示颜色的系统是C. I.E.系统。通过基于光谱辐射的加性混合的匹配来识别颜色的系统的成功倾向于掩盖已知的事实，即恒定主波长的线不是恒定色调的线。需要进一步分析视觉现象，同时考虑所有三种锥细胞类型的敏感性变化。为此，我们以无色差感觉为指标，探讨了无色差感觉与光谱成分和亮度等刺激变量之间的关系问题。结果表明，在非彩色轨迹的变化与刺激强度之间的中波长和长波长之间的线性关系和短波长和长波长之间的非线性关系来描述。其次，颜色后像的图形-背景配置进行了检查，以说明视觉系统如何处理的颜色和形式的组合。结果表明，除了第一部位的受体适应和第二部位的颜色-对手适应外，还存在第三适应部位。

The video framebuffer system was designed for precise psychophysical display, and techniques were developed to use the system in this role. This device was capable of displaying two-dimensional images with precise control of contrast, luminance, displaying timing and colors.One widely accepted system to represent colors is the C.I.E. system. The success of the system of identifying colors by matches based on additivity mixture of spectral radiations has tended to obscure the known fact that lines of constant dominant wavelength are not lines of constant hue. It is required to further analyze the visual phenomena in terms of the sensitivity changes in all three cone types to be considered simultaneously. For this purpose, we took achromatic sensation as an index, and dealed with the problem of relation between the experienced achromatic sensation and the stimulus variables of spectral composition and luminance. The results showed that the change in the achromatic locus with stimulus intensity was described in terms of a linear relation between the middle - and long-wavelength components and of a nonlinear relation between the short- and longer-wavelength components.Next, color afterimages in the figure-ground configurations were examined to specify how the visual system processes combinations of color and form. The results suggested the existence of the third adaptation site, in addition to the first-site receptor adaptation and the second-site color-opponent adaptation.