"Optical illusions come in all forms, from mind-melting artwork to photography trickery, but there's one style that never fails to perplex the internet - the humble colour illusion. Fooling the brain with some sneaky saturation trickery, this simple yet mesmerising illusion is doing the rounds once again, and op art fans can't believe their eyes. Often, the best optical illusions are fairly simple - it seems the more basic the design, the harder it is for our brains to register what we're seeing."
"The illusion in question features a grid of alternating green squares, with one half illuminated, while the other appears to be in shadow. Looks pretty standard, right? Until you realise the boxes labelled A and B are the same colour. A simplified version of Edward H. Adelson's checker shadow illusion, this mind-bending trick demonstrates how our brains perceive shadow, automatically 'correcting' what it sees based on visual context."
An optical illusion shows a grid of alternating green squares with one half illuminated and the other appearing in shadow. The squares labeled A and B are identical in color despite appearing different. The display is a simplified version of Edward H. Adelson's checker shadow illusion. The brain perceives shadow and automatically compensates for expected illumination, altering perceived color and brightness. Placing a hand over the central area between the two squares removes contextual cues and reveals the identical shade. Simple, high-contrast patterns often produce the strongest perceptual effects. Saturation manipulation and contextual framing drive the misperception.
Read at Creative Bloq
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