Natural scene statistics as the universal basis of color context effects.
The color context effects referred to as color contrast, constancy, and assimilation underscore the fact that color percepts do not correspond to the spectral characteristics of the generative stimuli. Despite a variety of proposed theories, these phenomena have resisted explanation in a single principled framework. Using a hyperspectral image database of natural scenes, we here show that color contrast, constancy, and assimilation are all predicted by the statistical organization of spectral returns from natural visual environments.
Long
Fuhui
F
Center for Cognitive Neuroscience and Department of Neurobiology, Box 90999, Levine Science Research Center, Room B243E, Research Drive, Duke University, Durham, NC 27708, USA. long@neuro.duke.edu
Purves
Dale
D
D003116:Color; D003118:Color Perception; D019992:Databases as Topic; D006801:Humans; D008027:Light; D014785:Vision, Ocular