The shadow knows: a primer on the informational structure of cast shadows.
I list relevant properties of cast shadows that the visual system could exploit (although it may not exploit). The study concerns the various types of information that can be extracted from shadows by systems that are significantly like ours (including embodied artificial systems) in an environment that is significantly like ours.
Casati
Roberto
R
Institut Nicod, CNRS-EHESS-ENS, 1 bis avenue de Lowendal, F 75007 Paris, France. casati@ehess.fr
D003071:Cognition / Q000502:physiology*; D006801:Humans; D008029:Lighting; D011601:Psychophysics; D014796:Visual Perception / Q000502:physiology*