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boit
Help me out. How comes when I watch movies with one eye closed I perceive images in 3 D. Is it only me or others have similar experience? Beats spending money on expensive tech. sets. Someone please explain.
[Moderator: One duplicate post deleted.]
flyingbuttressman
QUOTE (boit+Aug 21 2009, 10:24 AM)
Help me out. How comes when I watch movies with one eye closed I perceive images in 3 D. Is it only me or others have similar experience? Beats spending money on expensive tech. sets. Someone please explain.

When you close one eye, EVERYTHING becomes 2D. When you are watching a movie, your brain can't tell the difference between 2D and 3D. You need two eyes to see 3D.
Meem
I was a pirate for halloween once, eye patch and all. I didn't have any problems gauging depth in a 3d world with only 1 eye. Maybe you could watch a 3d movie with only one eye if it involves some sort flashing/phase shifting I would think. Might give you headache though, like florescent lights.

I know you won't like this one FBM, but it's not directed at you. Your comments make sense. I have three eyes Boit. Two that I see with, and one that I realize with.
boit
QUOTE (flyingbuttressman+Aug 21 2009, 02:38 PM)
When you close one eye, EVERYTHING becomes 2D.

But the view I get is far much different with one eye closed. It looks so so real it is only the absence of paralax that gives the game away. Maybe it is 2D as you put it but then there must be grades of 2D (just try any image on your screen). If not then I have vivid imagination.
flyingbuttressman
QUOTE (boit+Aug 21 2009, 11:43 AM)
But the view I get is far much different with one eye closed. It looks so so real it is only the absence of paralax that gives the game away. Maybe it is 2D as you put it but then there must be grades of 2D (just try any image on your screen). If not then I have vivid imagination.

The imagination thing is partially true. Your brain knows that what you are seeing is 3D even though it's only getting 2D information, so your brain "fakes" 3D.

QUOTE
I have three eyes Boit. Two that I see with, and one that I realize with.

Wow, a double-play: cheesy and lame.
MjolnirPants
QUOTE (Meem+Aug 21 2009, 10:36 AM)
I was a pirate for halloween once, eye patch and all.  I didn't have any problems gauging depth in a 3d world with only 1 eye.

That's because your brain also calculates distances based on perspective and memory. If you're 6' tall, then you know you're 6' tall, so when you look at the ground, you know it's 5' 9" (Or in your case, 5' 11" away, but still,) away and at what angle to level it is based on your sense of balance. Since your brain also knows how big the little pebbles in the asphalt or the blocks of the sidewalk or the blades of grass are, it can also estimate fairly accurately how far away an object sitting on the ground it. Since you know how big a doorway is, how tall your friends are, how big a television is, how far the distance from your front door to the street is, it continues to work even when you're not looking at the ground.

QUOTE (boit+)
Help me out. How comes when I watch movies with one eye closed I perceive images in 3 D. Is it only me or others have similar experience? Beats spending money on expensive tech. sets. Someone please explain.

Because your brain knows it's only perceiving the world in 2 dimensions, because you have one eye shut. Since it also knows that the world exists in 3 dimensions, it assumes that the movie you're watching is in three dimensions as well, and reacts accordingly to try to compensate for your lack of binocular vision by calculating depth as I mentioned above.

No matter what you do, you can't change the camera perspective, though, so the movie's still not 3D.
Meem
Holographic movies ... would be 3d? Maybe you could even say a dream too, but you get more than 3 sensations from dreams. You also get touch, taste/smell, feeling, pleasure, pain, and pretty confused. wink.gif

Life is a dream! Oh I know too much, so don't take it too seriously.
buttershug
QUOTE (boit+Aug 21 2009, 03:43 PM)
But the view I get is far much different with one eye closed. It looks so so real it is only the absence of paralax that gives the game away. Maybe it is 2D as you put it but then there must be grades of 2D (just try any image on your screen). If not then I have vivid imagination.

Have you had your eyes checked out?

The focus of my eyes is different in each one.
And on another forum that I go on there is a guy that has very different colour vision in each eye.
boit
QUOTE (MjolnirPants+Aug 21 2009, 06:55 PM)
Because your brain knows it's only perceiving the world in 2 dimensions, because you have one eye shut. Since it also knows that the world exists in 3 dimensions, it assumes that the movie you're watching is in three dimensions as well, and reacts accordingly to try to compensate for your lack of binocular vision by calculating depth as I mentioned above.

No matter what you do, you can't change the camera perspective, though, so the movie's still not 3D.

Thanks very much to you MjolnirPants and the rest. Your contribution has been very helpful and informative. The power of the brain will never cease to amaze. The 'miracle' merchants (a.k.a charismatic televangelist) never know the credits they should be claiming for giving site to the blind. They give them memory too! biggrin.gif
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