stylistic:tone, linguistic:paraphrasing
Human perception of shapes

Human vision relies on a wide range of shape representations. Some psychologists have theorized that humans mentally break down images into simple geometric shapes (e.g., cones and spheres) called geons. Others have suggested shapes are decomposed into features or dimensions that describe the way shapes tend to vary, like their segmentability, compactness and spikiness. When comparing shape similarity, however, at least 22 independent dimensions are needed to account for the way natural shapes vary.

There is also clear evidence that shapes guide human attention.