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Illusion of the Year 2021
- 1-6 5y agoI really enjoyed slime hand. It really brings home the potential of various haptic devices which will enhance our experiences in VR/metaverse.
- gnabgib 5y agoDomain doesn't seem to be super responsive - https://archive.fo/dam04 https://archive.fo/dam04
- Animats 5y agoIllusion of the year: "I won".
- 1-6 5y agoAnother one: “Brandon”
- robwwilliams 5y agoYes, a bit slow to load but worth it. Ten videos of visual system illusion that work well. The last illusion “Phantom Wiggle” is probably caused by time base differences of rods and cone photoreceptor systems. The wiggle and movement of the strobed light is caused by ineffective calibrated of the bright and fast neural signals relative to the darker and slow (mesopic) signals of the large surrounding field of vision. Timing differences between retinal subsystems (rods and cones mainly) are misinterpreted as movement. Easy to see (expose) this temporal-spatial error effect between the slow rod photoreceptor system and the fast cone system. Here is how: Just after dusk look at a bright light or even a star low on the horizon that ALSO happens to be near the trunk of a dark tree. Close one eye and then look at the bright light while gently rocking the corner of your open eye back and forth with your finger. The light and tree trunk will move relative to each other. In fact, the light may appear in the tree trunk. Time and space are also relative in the brain. The brain has no clock or oscillator and has to create its own unifying timing system. The near-synchronization among brain subsystems is a key role of the thalmo-cortico-thalamuc feedback loop (imho).
- kevin_thibedeau 5y agoYou can induce the phantom wiggle by looking at a matrix scanned 7-segment display and making motorboat sounds that vibrate your head.
- hiptobecubic 5y agoI remember discovering this phantom wiggle when looking at LED clocks as a kid. Look at an old clock (or microwave) and vibrate either it or you (hum) at various speeds.
- depsypher 5y agoSince the site is struggling, here's the videos in top ten order: https://youtu.be/i4p_x0S5bmQ https://youtu.be/i4p_x0S5bmQ https://youtu.be/TXk-Oc35oN4 https://youtu.be/TXk-Oc35oN4 https://youtu.be/bVbPmFpspXc https://youtu.be/bVbPmFpspXc https://youtu.be/q_JqmwwbtpA https://youtu.be/q_JqmwwbtpA https://youtu.be/yC5kHTsmXqQ https://youtu.be/yC5kHTsmXqQ https://youtu.be/zWr63p3gsM0 https://youtu.be/zWr63p3gsM0 https://youtu.be/LFvOzXUMXwM https://youtu.be/LFvOzXUMXwM https://youtu.be/jb29X2SrgDM https://youtu.be/jb29X2SrgDM https://youtu.be/CePZ6vwYOYQ https://youtu.be/CePZ6vwYOYQ https://youtu.be/a7LUNyMvGqU https://youtu.be/a7LUNyMvGqU
- matsemann 5y ago> https://youtu.be/jb29X2SrgDM https://youtu.be/jb29X2SrgDM Expected Kokichi Sugihara to be represented as always, not disappointed. I will have to try and replicate this one as well.
- 1-6 5y agoI’d like to preface that once you see it, you can’t unsee it. Enjoy the illusion while the answer is not revealed.
- lisper 5y agoI don't get the fourth one, the one with the different colored crocs. I put a color meter on the images and the mystery pair is definitely not the same color as the pink pair.
- krsrhe 5y ago
- armchairhacker 5y agoit’s not the same in the photo, the lighting changes the actual color. If you put a red object under green light or vice versa, it will physically appear grey. But it doesn’t really work as an illusion in a digital video.
- 5y ago
- notfed 5y agoThe crocs illusion is just plain wrong. It says "the correct answer is <pink>". They then contradict themselves by saying it's green-gray. It's green-gray. Am I crazy? Any else's thoughts?
- allenu 5y agoI think you're right. The RGB values clearly show it's green-gray.
- zootboy 5y agoI wasn't too impressed with this one, either. In my mind, this illusion is much more straightforward demo of a similar effect (color perception being relative to surrounding colors): https://www.illusionsindex.org/ir/checkershadow https://www.illusionsindex.org/ir/checkershadow
- notfed 5y agoYeah, this one is a true illusion: they're actually the same color, unlike the shoe example.
- delarge 5y agoThe shoe example seems closer to a weaker version of this effect: https://www.illusionsindex.org/i/grey-strawberries https://www.illusionsindex.org/i/grey-strawberries
- jaclaz 5y agoYep, and it works for grey scale too. This is the one I find the simplest: http://3.bp.blogspot.com/-FLbAdn2URJs/Toim-B864TI/AAAAAAAAOc4/cBJ44hm9SIM/s640/gray+optical+illusion.jpg http://3.bp.blogspot.com/-FLbAdn2URJs/Toim-B864TI/AAAAAAAAOc... And a video of a similar effect: https://www.youtube.com/watch?v=z9Sen1HTu5o https://www.youtube.com/watch?v=z9Sen1HTu5o
- jawns 5y agoYou need to make a distinction between color of the shoe (under normal lighting conditions) and pixel values of the shoe in the photograph. The shoe is pink under normal lighting conditions, but the pixel values are green-gray in the photograph, where the lighting has been manipulated. So, if you were to use a color-dropper tool on the photograph, you would get green-gray values for those pixels. But some people are able to do color-correction in their minds and determine that the underlying color of the shoe (under normal lighting conditions) is pink. Indeed, the automatic color correction that occurs as they visually process the image is so strong that they find it hard to recognize that the actual pixel values are green-gray. Yet when the color of the socks is changed to white, but nothing else about the photograph is altered, the visual cue that prompts them to do color-correction in their minds disappears, and they perceive the shoe color in the photograph to be green-gray, just as others do.
- TrianguloY 5y agoIn "the double ring illusion" I'm unable to see them as 180° rotations. I see all rings in the video doing constant 360° rotations, and I don't care if they intersect. Maybe I'm too used to see virtual 3D animations where objects can intersect and do whatever they want without any physics involved.
- icsllaf 5y agoMajority of the illusions seem to be 2D object projected as 3D object, they still get me every-time though. Definitely would recommend a game called Superliminal if this kind of stuff gets you.
- joshschreuder 5y agoAnd if you like Superliminal you would definitely like Antichamber. https://store.steampowered.com/app/219890/Antichamber/ https://store.steampowered.com/app/219890/Antichamber/
- jccalhoun 5y agoSome of these are pretty cool but I always feel like the ones that depend on the camera being in a fixed perspective aren't nearly as cool.
- matsemann 5y agoSome of them actually work quite well in real life. Even when looking with two eyes (thus giving your brain information about depth) and from a non-perfect angle. I've had exhibitions with these in the physical world, and no one can avoid seeing the illusion, even after picking up the objects and seeing the secret. The brain is stupid! https://github.com/Matsemann/impossible-objects https://github.com/Matsemann/impossible-objects
- IshKebab 5y agoI agree, with a fixed perspective you can show anything you want.
- 323 5y agoThe winning one, the phantom queen, it's not what I would call an optical illusion. It's more of a magic trick, like when they cut a person in a box in two.
- trebligdivad 5y agoThe slowly changing room one is very neat.
- Xophmeister 5y agoAh, the “phantom wiggle”: I’ve witnessed this so often in my rear view mirror from certain vehicles (usually vans). I thought I was going mad, but now I know! I didn’t realise LED lights strobe.
- asxd 5y agoVery cool. I looked back at the 2020 finalists, and the first video from that list truly boggled me: https://youtu.be/5DYeAkx2IBo https://youtu.be/5DYeAkx2IBo. At around 16s in, my vision of the stair case suddenly and completely changes to being upside-down to rightside-up. I know what's going on physically, but it feels like my brain is doing these behind-the-scene calculations and at a certain moment feeds my conscious mind a brand new image. Pretty neat how some optical illusions can put you at odds with your own brain. quick edit: It doesn't always happen for me when I let the video continue to play, but if I pause it at 16s, then as soon as I hit the pause button, the image completely flips for me. Pretty wild. I think it's probably because I let my eyes drift away from the staircase for a brief moment, and when they return the image is sort of reinterpreted.
- asxd 5y agoIt's also interesting how with most visual illusions, you can sort of convince your mind to interpret it one way or another if you try hard enough. I think the simplest example is the necker cube, where you can convince your brain it's either pointing towards you to the left or towards you to to the right [1], seemingly just by visualizing those orientations. In case I'm not the only one who interprets it this way, I'm wondering, is there a name or academic description for that phenomena? The wikipedia article mentions: > There is evidence that by focusing on different parts of the figure, one can force a more stable perception of the cube. Which is pretty interesting by itself, but I think it implies the need to physically move your eyes. What I'm curious about is the ability to alter your perception without moving your eyes physically. It seems like evidence for or against that could lead to some interesting conclusions. [1] https://en.wikipedia.org/wiki/Necker_cube https://en.wikipedia.org/wiki/Necker_cube
- low_tech_love 5y agoThe second place should really be the winner. It’s absolutely astounding!