Even though the typical retinal image is elliptical, why do we perceive a coin as round?

Name: Even though the typical retinal image is elliptical, why do we perceive a coin as round?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Shape constancy refers to the ability of the visual system to perceive the shape of an object as constant, even when the retinal image of the object changes. In the case of a coin, the retinal image is elliptical, but we perceive the coin as round because of shape constancy.

Even Though the Typical Retinal Image Is Elliptical, Why Do