The Perception of Color

absolute brightness achromatic component achromatic point actual adaptation afterimages amount appearance assume assumption blue brightness brilliance called central stimulus ception chapter characteristic chro chromatic strength color perception color vision colorimetric purity colorless colors seen complementary completely concept consider constant curve diagram discussion dominant wavelength effect equation fact fluorence fovea frame of reference function gray grayness green heterochromatic illumination increase independent intensity involved isolated stimulus light sources luminance match luminous efficiency matic metameric metamers mixture monochromatic light monochromatic stimuli object colors pairs perceived color perceptual variables photopic possible present primaries problem produce psychophysical variables radiant intensity range ratio receptor reflectance relation relative luminance represent response retina S₁ samples saturation scene scotopic vision sensitivity separate single spectral energy distributions stim stimuli seen surface surround tion unique hues unitary vari visual yellow