1984 volume 13(2) pages 213 – 217
doi:10.1068/p130213

Cite as:
Braunstein M L, Andersen G J, 1984, "A counterexample to the rigidity assumption in the visual perception of structure from motion" Perception 13(2) 213 – 217
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A counterexample to the rigidity assumption in the visual perception of structure from motion

Myron L Braunstein, George J Andersen

Received 2 July 1982, in revised form 17 June 1983

Abstract. It has been proposed that the human visual system prefers perceptions of objects that are rigid or undergo minimum form change. A counterexample is presented in which a rigid two-dimensional figure rotating in the frontal plane is perceived as a distorting three-dimensional shape. It is argued that this perception results from the stimulation of automatic processes for perceiving size change, and that these processes are not subject to a general rigidity assumption.

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