Representing Smooth Plane Curves for Recognition: Implications for Figure-Ground Reversal

D. D. Hoffman, W. A. Richards

A representation of smooth plane curves for recognition is proposed. The basic representation is a linked list of four primitive shapes, called "codons," which are invariant under rotations, translations and uniform scaling. Psychophysical observations regarding the perception of figure- ground reversals are presented to suggest that a similar representation could be used by the human visual system.

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