Magnets, maybe.
Comment on There is the face of a cat in this picture. Can you find it?
Marternus@discuss.tchncs.de 2 days agoHow does it work?
remotelove@lemmy.ca 2 days ago
EmpathicVagrant@lemmy.world 1 day ago
Spray a little water on it and the illusion stops working, so yeah it must be magnets.
Allero@lemmy.today 2 days ago
Contrast variations in white tiles, it seems. When you look close, the brain compares shades of white to the neighboring black. When you look far away, brain focuses on larger patterns.
pyre@lemmy.world 1 day ago
that’s what it is, I’ve made over before. basically grayscale image faintly on a black and white pattern, doesn’t need to be checkerboard.