Testing the coplanar ratio hypothesis of lightness perception.

摘要: What determines an object's lightness remains unclear, but it is generally thought that the ratios of its luminance to other objects in a scene play crucial role because these allow relative reflectance each object be estimated, providing all are under same illumination. Because lie plane typically illuminated equally, has been suggested between coplanar primarily determine (Gilchrist, 1977 Science 195 185-187; Gilchrist et al, 1999 Psychological Review 106 795-834). An alternative hypothesis perceived illumination differences can affect directly. As studies provided evidence for ratio always varied and relationships simultaneously, unclear which correct. I measured influence factor separately found have greater effect on lightness.