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Stereogram Tetris

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Re: Stereogram Tetris

#41

Post by mistercow »

Finally a use for my super power!

When I was a kid I was obsessed with inventing a 3D TV. I went to the library and tried to understand how holograms worked and everything. I was so intrigued by stereopsis that I would constantly try to get any two similar objects in my field of view to "combine" by crossing my eyes until they locked. I'd hold my index fingers in front of my face, and then either cross my eyes or stare past them to bring them together, and see how far I could move them apart before I lost the lock.

I obtained the power of exceptional vergence. I was actually surprised to find that only two or three people I've met can make non-auto-stereograms (two photos side by side) work at all. And to this day, autostereograms resolve automatically for me.

My only weaknesses are cheap faux wood flooring and other short period tilings.

And Tetris. Man I suck at Tetris.

Re: Stereogram Tetris

#42

Post by mistercow »

crazygringo wrote: post #4

Wow... I'm actually amazed I can play this without difficulty. It takes about a second to figure out what each new piece is, though. And I'm pretty sure my eyes would ache horribly if I played it for more than about two minutes. But, fascinating just to see that it can be done.

I actually find that eyes burning and watering is more of a problem with prolonged exposure to stereograms, although I get that with 3D movies using glasses too.

A while back, I watched Captain America in side by side mode on my computer. Only problem was that in SBS they put the left eye on the left and the right on the right. To view that as a stereogram would require "wall-eyed" vergence, which is basically impossible to do beyond a certain angular distance - I'd have had to watch it all tiny. So as an experiment in perceptual adaptation, I watched the whole movie cross-eyed, so that I perceived the depth as inverted.

It wasn't really enough time for full perceptual adaptation, although by the end of it, I basically found that my brain had stopped paying attention to dept whatsoever unless I consciously thought about it.

Anyway the point is that at the end, I let my eyes slide back into their normal state, and they burned for a while after like they were dry, but they didn't ache at all.

That said, I have spent a ludicrous amount of time in my life setting my vergence to values outside of the manufacturer's recommended range. So my results may not be typical.

Re: Stereogram Tetris

#45

Post by bfrs »

bfrs wrote: post #30

If you are having trouble with this, wikipedia has some good instructions which helped me. First try autostereograms [1] (these are more simpler to see), and then simple random dot stereograms (RDS) [2], and finally magic eye static and moving stereograms. BTW, the book which introduced RDS: "Foundations of Cyclopean Perception" by Bela Julesz is considered one of the most influential books in cognitive science. With…

a simple autostereogram:

   1     1     1     1     1     1     1     1     1     1     1     1
   
   2      2      2      2      2      2      2      2      2      2   
   
   3       3       3       3       3       3       3       3       3  
   
   4        4        4        4        4        4        4        4   
   
   5         5         5         5         5         5         5      
   
   6          6          6          6          6          6          6
   
   7           7           7           7           7           7
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