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Mathematician Kokichi Sogihara, a famous Japanese magician, designed the two winners visually of the competition for the best optical illusion 2020, called 3D Schröder Staircase.
The classic Schröder Staircase, published by German scientist Heinrich JF Schroeder in 1858, later evolved into other forms in the work of Dutch artist MC Escher, but the striking simplicity of the original is still striking.
In the illustration, what at first glance appears to be an unambiguous representation of a staircase visible from the top, and it is clear that it is two staircases (the other is seen from the bottom).
(Heinrich GF Schröder, via Kokichi Sugihara)
And if you can’t imagine it, flipping Schroeder’s staircase tends to make the other perspective visible. But maybe for only a fleeting second, before your mind experiences the psychological phenomenon of a Gestalt shift, as your perception shifts to its previous interpretation.
(Contest for the best illusion of the year / YouTube
And in his new development on this already twisted subject, Sugihara has now inverted the same 2D stair geometry into a three-dimensional shape, creating pieces of cardboard that do the exact same trick when viewed from a particular vantage point. .
“The current 3D object also has two interpretations,” Sugihara explains. “Both are stairs visible from the top, and the interpretations move from one to the other as we rotate the object 180 degrees around the vertical axis.”
But just because that’s what it looks like doesn’t mean it is.
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On her website, Sugihara teases how the illusion is actually constructed, going so far as to provide a free “building kit” diagram for the impossible steps, in case you feel like making a kit to keep at home. .
And at the heart of the illusion is a simple trick: a staircase may look like a staircase, but it’s actually a flat surface, cleverly using angles and shadows to trick your mind.
To facilitate the task of visual perception, our brains make appropriate assumptions when possible. And dark tones mean shadows, a hint of depth; Converging lines are usually a measure of distance. Throw it together and your lazy mind will do its best to find a familiar story that matches the shapes.
“This object is an example of my experimental material to study the behavior of brains, which can misinterpret 2D images as 3D objects when embedded in real 3D structures,” Sogihara explains, noting that the added real 3D sidewalls and magician support pillars filled with illusions. As a result, we see a new mystery that differs from that of the original Schroeder drawer.
(Kokichi Sugihara)
In addition to rotating Schroeder’s 3D drawer (the 3D equivalent of flipping 2D artwork upside down), precise positioning using a mirror reveals something strange: seeing both perspectives simultaneously , and Gestalt Shift can’t do anything about it.
Source: ScienceAlert
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