No Measured Effect of a Familiar Contextual Object on Color Constancy.

摘要: Some familiar objects have a typical color, such as the yellow of banana. The presence in scene is potential cue to illumination, since light reflected from them should on average be consistent with their surface reflectance. Although there are many studies how identity an object affects its color perceived, little known about whether helps visual system stabilize appearance other respect changes illumination. We used successive matching procedure three experiments designed address this question. Across we studied total 6 subjects (2 Experiment 1, 3 2, and 4 3) partial overlap between experiments. compared measured constancy across conditions which illuminant was available not present. Overall, our results do reveal reliable improvement addition scene. An analysis experimental power data suggests that if effect, it small: less than approximately change 0.09 index where absence corresponds value 0 perfect 1.