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Contour Perception, Illusion and Reality

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Abstract

A qualitative analysis of the perception of contours indicates that, to counteract the filtering characteristics of the eye, there may be a process of contour enhancement by a second difference correction. By simple experiments, contours corresponding to true edges, contours perceived although there are no edges in the external intensity distribution, and certain aspects of contrast are investigated with results that show agreement with such a process.

© 1958 Optical Society of America

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