Grégoire Locqueville on Nostr: You know those abstract pictures (/videos) that you're supposed to look at in a ...
You know those abstract pictures (/videos) that you're supposed to look at in a certain way and then you see something in 3D (they're called autostereograms)?
I've always been unimpressed by them — like I understood how to look at them and I did see 3D stuff, but it always just looked like a blob-shaped hole in a flat surface to me.
Well it turns out there are actually two types of autostereograms — wall-eyed and cross-eyed, with wall-eyed being the most common type — and I had been using the technique for cross-eyed autostereograms my whole life. For wall-eyed ones, you're supposed to... do the opposite of cross eyes, i.e. point your eyes to a point that's behind the surface you're looking at. So I was seeing 3D stuff, but sort of in negative.
In hindsight, it makes sense to me that there are two types of autostereograms. What I'm puzzled about is why the wall-eyed type is so ubiquitous. It's so easy to me to cross eyes; on the other hand I can't seem to "uncross" eyes. Surely there are other people like me? Why hadn't I encountered a single cross-eyed autostereogram before?
Here's the Wikipedia page, with some nice diagrams and examples:
https://en.wikipedia.org/wiki/Autostereogram
And here's a music video autostereogram, with both versions available:
Wall-eyed: https://www.youtube.com/watch?v=2AKtp3XHn38
Cross-eyed: https://www.youtube.com/watch?v=uUO5al57-1s
I've always been unimpressed by them — like I understood how to look at them and I did see 3D stuff, but it always just looked like a blob-shaped hole in a flat surface to me.
Well it turns out there are actually two types of autostereograms — wall-eyed and cross-eyed, with wall-eyed being the most common type — and I had been using the technique for cross-eyed autostereograms my whole life. For wall-eyed ones, you're supposed to... do the opposite of cross eyes, i.e. point your eyes to a point that's behind the surface you're looking at. So I was seeing 3D stuff, but sort of in negative.
In hindsight, it makes sense to me that there are two types of autostereograms. What I'm puzzled about is why the wall-eyed type is so ubiquitous. It's so easy to me to cross eyes; on the other hand I can't seem to "uncross" eyes. Surely there are other people like me? Why hadn't I encountered a single cross-eyed autostereogram before?
Here's the Wikipedia page, with some nice diagrams and examples:
https://en.wikipedia.org/wiki/Autostereogram
And here's a music video autostereogram, with both versions available:
Wall-eyed: https://www.youtube.com/watch?v=2AKtp3XHn38
Cross-eyed: https://www.youtube.com/watch?v=uUO5al57-1s