Stimulus Determinants of Brightness Constancy and the Perception of Illumination1
نویسنده
چکیده
Simultaneous approaches to brightness constancy and to the perception of illumination were made in a Hsia-type experimental situation, where the immediate surround of standard disk was kept at a constant, very low luminance. 5 subjects were used. A log-log linear relation was found again between the standard luminance and the matched luminance. The obtained slopes ranged from 0.31 to 0.44. These are reversely related with the tendency toward constancy and mean a considerably strong tendency, which slightly decreased as the luminance ratio of the standard disk to the peripheral field increased. The data of illumination-matching showed that the matched illuminance increased almost
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