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Mathematician Kokichi Sogihara, a famous Japanese magician, designed the two visually winning the 2020 Best Optical Illusion competition, called 3D Schröder Staircase.
The classic Schröder Staircase, published by German scientist Heinrich J.F. Schroeder in 1858, later evolved into other forms in the work of Dutch artist M.C. Escher, but the striking simplicity of the original is still striking.
In the illustration, what appears at first glance to be an unambiguous depiction of one staircase that is visible from the top, and it is clear that it is two stairs (the other is seen from the bottom).
(Heinrich GF Schröder, via Kokichi Sugihara)
And if you can’t imagine it, turning Schroeder’s staircase upside down tends to make the alternate perspective visible. But perhaps for only a fleeting second, before your mind undergoes the psychological phenomenon of a Gestalt shift, as your perception shifts to its previous interpretation.
(Best Illusion of the Year Contest / YouTube
And in his new development on this already twisted topic, Sugihara has now reversed the same 2D staircase geometry into a three-dimensional form, creating pieces of cardboard that do exactly the same trick when viewed from a particular perspective.
“The current 3D object also has two interpretations,” Sugihara says. “Both are stairs visible from the top, and the interpretations shift from one to the other when we rotate the object 180 degrees around the vertical axis.”
But just because this is what it looks like doesn’t mean it is what it is.
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On his website, Sugihara teases how the illusion is actually built, going so far as to provide a free “building kit” scheme 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 shading to trick your mind.
To make the task of visual perception easier, our brains make appropriate assumptions wherever 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 try its best to find a familiar story that fits the shapes.
“This object is an example of my experimental material for investigating the behavior of brains, which can incorrectly misunderstand 2D images as 3D objects when they are embedded in real 3D structures,” Sogihara explains, noting that adding real 3D side walls and support pillars Illusion filled magician. 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 turning the 2D illustration upside down), precise positioning using a mirror reveals something strange: seeing both perspectives simultaneously, and there’s nothing Gestalt Shift can do about it.
Source: ScienceAlert
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