James M. Kraft studied mechanisms of color constancy under relatively natural viewing. A physical chamber and controlled changes in illumination allowed competing visual cues to be varied. The resulting adjustments test how observers compensate for lighting, rather than equating a constant surface with a constant spectrum arriving at the eye. [ref]
Mechanisms of color constancy under nearly natural viewing by James M. Kraft and David H. Brainard. 1999, nearly natural viewing and controlled cue changes
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