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The Hollow-Face illusion is an optical illusion in which the perception of a concave mask of a face appears as a normal convex face. Hybrid image: A Hybrid image is an optical illusion developed at MIT in which an image can be interpreted in one of two different ways depending on viewing distance. Illusory contours
Optical illusion is also used in film by the technique of forced perspective. Op art is a style of art that uses optical illusions to create an impression of movement, or hidden images and patterns. Trompe-l'œil uses realistic imagery to create the optical illusion that depicted objects exist in three dimensions.
G. Sarcone is the author (and co-author) of the following books: Fantastic Optical Illusions: More Than 150 Deceptive Images and Visual Tricks, Carlton, UK, 2020, ISBN 178739235X. Ultimate Eye Twisters, Carlton, UK, 2019, ISBN 1783124482. Amazing Optical Illusions, Carlton, UK, 2018, ISBN 1787391639.
The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. Autostereogram of a cube rotating Autostereogram. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene.
The visual system undergoes mid-level vision and identifies a face, but high-level vision fails to identify who the face belongs to. In this case, the visual system identifies an ambiguous object, a face, but is unable to resolve the ambiguity using memory, leaving the affected unable to determine who they are seeing. [6]
Ponzo illusion in a purely schematic form and, below, with perspective clues. However, almost all geometrical optical illusions have components that are at present not amenable to physiological explanations. [4] The subject, therefore, is a fertile field for propositions based in the disciplines of perception and cognition. [5]
A version of the Zöllner illusion. The Zöllner illusion is an optical illusion named after its discoverer, German astrophysicist Johann Karl Friedrich Zöllner.In 1860, Zöllner sent his discovery in a letter to physicist and scholar Johann Christian Poggendorff, editor of Annalen der Physik und Chemie, who subsequently discovered the related Poggendorff illusion in Zöllner's original drawing.
The irradiation illusion is an illusion of visual perception in which a light area of the visual field looks larger than an otherwise identical dark area. It was named by Hermann von Helmholtz around 1867; [1] but the illusion was familiar to scientists long before then; Galileo mentions it in his 1632 book Dialogue Concerning the Two Chief World Systems. [2]