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2. Shepard tables - Wikipedia

   en.wikipedia.org/wiki/Shepard_tables

   Shepard tables illusion, named for its creator Roger N. Shepard. Shepard tables (also known as the Shepard tabletop illusion) are an optical illusion first published in 1990 as "Turning the Tables," by Stanford psychologist Roger N. Shepard in his book Mind Sights, a collection of illusions that he had created. [1]

3. Checker shadow illusion - Wikipedia

   en.wikipedia.org/wiki/Checker_shadow_illusion

   While being one of the most well-known contrast illusions, there are similar effects which cause two regions of identical color to appear differently depending on context: The Cornsweet illusion creates a boundary between two identically-shaded regions with a discontinuous gradient, resulting in the opposing sides appearing to be different.

4. List of optical illusions - Wikipedia

   en.wikipedia.org/wiki/List_of_optical_illusions

   These are images that can form two separate pictures. For example, the image shown forms a rabbit and a duck. Ambigram: A calligraphic design that has multiple or symmetric interpretations. Ames room illusion An Ames room is a distorted room that is used to create a visual illusion. Ames trapezoid window illusion

5. Delboeuf illusion - Wikipedia

   en.wikipedia.org/wiki/Delboeuf_illusion

   Though the two circled dark discs are the same size, the left disc seems smaller than the right one. The Delboeuf illusion is an optical illusion of relative size perception: In the best-known version of the illusion, two discs of identical size have been placed near to each other and one is surrounded by a ring; the surrounded disc then appears larger than the non-surrounded disc if the ring ...

6. Ambiguous image - Wikipedia

   en.wikipedia.org/wiki/Ambiguous_image

   Ambiguous images or reversible figures are visual forms that create ambiguity by exploiting graphical similarities and other properties of visual system interpretation between two or more distinct image forms.

7. Optical illusion - Wikipedia

   en.wikipedia.org/wiki/Optical_illusion

   Physical illusions are caused by the physical environment, e.g. by the optical properties of water. [4] Physiological illusions arise in the eye or the visual pathway, e.g. from the effects of excessive stimulation of a specific receptor type. [4] Cognitive visual illusions are the result of unconscious inferences and are perhaps those most ...