This is called the the bulging checkerboard illusion.

Ambiguous Suits & Hearts: the work of mathematician Kokichi Sugihara’s amazing ambiguous object illusions

Can't fool me. This is the Special Stage from Sonic and Knuckles.

Classic optical illusion! 🔥 This checkerboard looks so bulging that you want to run your hand over it. The brain just refuses to believe it's completely flat. Our vision is wild!

This did not help my sinus headache

Interesting. I wonder how much of that responsible for the "pin cushion" effect seen on CRT monitors in the 90s from SONY, NEC, etc. Before flat panels, there were a lot of adjustments possible and sometimes necessary for the old monitors.

I think I've just found how to make big bucks. I'll start selling T-shirts with a checkerboard pattern AND strategically placed polka dots... Only for not-so-well-endowed women 😂

Your brain edits reality before you experience it.

Remember this, Next time you 100% sure what you are looking at is “reality”

توجد الكثير من المشاهد المماثلة في الخداع البصري، لكن لماذا لا يوجد تفسيرات علمية لهذه الظواهر في الخداع البصري؟

知覚は世界を読み誤っているのではなく、宇宙そのものが局所値ではなく関係構造として存在していて脳もその形式で世界を読んでいることなのではないかという。「距離」とはという謎。

"is that the bulging checkerboard illusion or you just happy to see me?"

Awesome!!!

Si haces un dibujo en un papel, es plano....le metes sombras y parece tridimensional. Dibuja un circulo.... métele sombras y parecerá una esfera.

The effect, popularized by Akiyoshi Kitaoka, works because the inset dots create perceived misaligned lines and tilted intersections that the brain interprets as a 3D curvature on an otherwise flat, regular pattern. • Toggling the dots on and off in the demonstration reveals the perfectly straight lines and square tiles, illustrating how subtle geometric cues override our perception of flat surfaces.

Cool! And frightening.

？？ はいからさんが通る ？？

Squinting only fixes it temporarily

Bu nasıl iştir böyle? Gözümüz yanılıyorsa bence her şeyimiz yanılıyordur.

Quite an illusion

錯覚って面白いなぁ

Вот зачем ты мне прямо на на моих глазах мозг сломал😁

Noooo! You're messing with my mind!

That's crazy

No. That’s what you see when WA Police pick you up after too many drinks in Northbridge.

WOW

My eyes are lying to my brain

Definitely an adequate name

se vc quase fechar o olhos a ilusão se perde.

oh this is a good one

I'm tricked. There are some patterns.

My brain completely failed at this 😂

Patterns inside patterns. Pattern recognition is a built in (seeing) feature for humans.

Impossible

ずっと見ていられる