The Perception of Color

absolute brightness achromatic component achromatic point adaptation afterimages appearance assumption blue brightness brilliance called central stimulus ception characteristic chro chromatic strength color perception color photography color vision colorimetric purity colorless colors seen complementary concept consider constant curve decrease 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 Munsell system object colors perceived color perceptual variables photopic possible present primaries problem produce range ratio receptor reflectance relation relative luminance represent response retina samples saturation scene scotopic vision sensitivity separate single spectral energy distribution spectrum locus stim stimuli seen surface surround tion unique hues unitary varying visual yellow