I've often wondered if there are perceptual illusions for blind people: Maybe a physical cafe wall would feel like the rows weren't parallel.
Perceptual Illusions (2018)
11–20 of 35 posts
Re: Perceptual Illusions (2018)
#12I wonder how many of these illusions work in 3D. Might have to take a crack at modelling the rice wave illusion or the cafe wall illusion for 3d printing.
Re: Perceptual Illusions (2018)
#13Number 12 is quite something, it works with anything you look at after staring the center of the top image. I looked at my food and I could see it moving in a very odd manner, went back to image for 15 seconds and looked at the walls, same effect and repeated the same with other stuff and after 10 minutes I feel motion sickness like the one you get after spinning and losing your balance (not everyone gets this I think)
Re: Perceptual Illusions (2018)
#14Check out http://illusionoftheyear.com/ It's a yearly contest with people coming up with various stuff. Normally one finds Kokichi Sugihara in the top. I'm a big fan of him after meeting him at a conference (FUN With Algorithms), and made my own attempts on some of his concepts: https://github.com/Matsemann/impossible-objects
https://github.com/Matsemann/impossible-objects
holy crap those gifs with the mirror are completely doing my head in
Re: Perceptual Illusions (2018)
#15Number 12 is quite something, it works with anything you look at after staring the center of the top image. I looked at my food and I could see it moving in a very odd manner, went back to image for 15 seconds and looked at the walls, same effect and repeated the same with other stuff and after 10 minutes I feel motion sickness like the one you get after spinning and losing your balance (not everyone gets this I thin…
It's amazing how well it reproduces how some psychedelics warp vision. Those act on the brain, this tricks the eyes, similar result.
I experience something similar while cycling on trails. If I watch only the road rolling under me for some time and then look at some static object, like a big cloud, it appears to move towards me (or away, can't remember right now).
Re: Perceptual Illusions (2018)
#16I seem to be immune from most of these illusions. I am not color blind and both my eyes can see fine. It must be something inside my head that's different. I have to read the explanation to understand what other people are seeing.
Re: Perceptual Illusions (2018)
#17I've often wondered if there are perceptual illusions for blind people: Maybe a physical cafe wall would feel like the rows weren't parallel.
There's a neat one that involves touch called the Thermal Grill Illusion. You put two pipes together and run cold water through one and warm water through the other. It feels scalding hot when you grab them.
Re: Perceptual Illusions (2018)
#18Discussed at the time:
Perceptual Illusions - https://news.ycombinator.com/item?id=18307428 - Oct 2018 (24 comments)
Re: Perceptual Illusions (2018)
#19One of may favourite instances of an optical illusion ever is this short video of a cat pouncing on a sheet of paper on which shows an apparent-motions spirals illusion. https://yewtu.be/watch?v=S4IHB3qK1KU It reveals that at least this aspect of feline and human visual perception appears to be similar. As a means of getting inside a cat's head, it's never failed to fascinate me. There's another ... perceptual phenom…
Found it, episode 103, "Desirability Bias"
Mind, after several months of not having heard that episode ... I understood the audio immediately.
Audio: https://youarenotsosmart.com/wp-content/uploads/2017/07/103-... (mp3)
Episode: https://youarenotsosmart.com/2017/07/20/yanss-103-desirabili...
When David McRaney says "savour that feeling, because there is no going back", believe him. There really isn't.
The clip, and the reveal, are at the beginning of the episode.
Re: Perceptual Illusions (2018)
#20I'm wondering if anyone has used optical illusions as a way to screen for bots.