Ambiguity in 3-D patterns induced by lighting assumptions.
A bistable pattern is shown with white and black bars with horizontal and vertical orientations which produce an impression of thin slabs stacked up in depth either toward or away from the observer. It is postulated that the ambiguity is induced by the observer's assumption of the direction of the light source.
Papathomas
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TV
Laboratory of Vision Research, Rutgers University, New Brunswick, NJ 08903.
Gorea
A
A
D001288:Attention; D003867:Depth Perception; D004193:Discrimination Learning; D006801:Humans; D008027:Light; D009903:Optical Illusions; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics