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Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors. Color constancy: Colour constancy is an example of subjective constancy and a feature of the human color perception system which ensures that the perceived color of objects remains ...
Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images.
At the high resolution of modern computer screens, they better see black letters on white background rather than vice versa. Therefore, long reversed texts are rare. The reversing is widely used in the various equipment design (from television remotes to dump trucks): a half-erased button or plate remains readable.
Billboards and other electronic signs use apparent motion to simulate moving text by flashing lights on and off as if the text is moving.. The term illusory motion, or motion illusion or apparent motion, refers to any optical illusion in which a static image appears to be moving due to the cognitive effects of interacting color contrasts, object shapes, and position. [1]
In a figure / ground ambigram, letters fit together so the negative space around and between one word spells another word. [42] In Gestalt psychology, figure–ground perception is known as identifying a figure from the background. For example, black words on a printed paper are seen as the "figure", and the white sheet as the "background".
Grapheme–color synesthesia or colored grapheme synesthesia is a form of synesthesia in which an individual's perception of numerals and letters is associated with the experience of colors. Like all forms of synesthesia, grapheme–color synesthesia is involuntary, consistent and memorable.
Interestingly, an upside down flag was at one point an apolitical gesture by sailors to signal distress. In the United States, though, flying the American flag upside down has evolved into a form ...
Hidden messages include backwards audio messages, hidden visual messages and symbolic or cryptic codes such as a crossword or cipher. Although there are many legitimate examples of hidden messages created with techniques such as backmasking and steganography, many so-called hidden messages are merely fanciful imaginings or apophany.