Re: yet another compression idea based on human 3D-viewing

On 2002.07.22 04:11 Daniel Arnold wrote:
> Beginning with an old fact that we view our environement out of the 
> perspective of a virtual third eye (called "zyklopisches Auge" in german) in 
> the middle between our two eyes (just try it, close one eye look around open 
> it and close the other and compare the perspectives with that from both eyes 
> open or look at babies that always take an object in between of their eyes 
> instead in front of one eye) there was build up a theory that explained our 
> 3D-viewing and the middle eye perspective.
> 
I don't think this is a fact. Most people have a dominant eye. Find an object
not close to you, place your thumb over it. Alternately close your eyes. For
most people, what you see is the object with a partially transparent thumb
over it with a dimmer thumb to the side. (If your arm is extended.) If you
bring your thumb close to your face and try to obscure the distant object,
you'll find that closing one of your eyes (the dominant eye) causes your
thumb to jump to the side as your brain switches its view to the non-dominant
eye.

You actually describe this experiment in the next paragraph when you talk
about fingers jumping.

I've always wondered if this messes up peoples motor control, e.g., shooting
a basketball if your left handed but right eye dominant.

To me it seems that the brain fills in obscured information from the
non-dominant eye in the current plane of focus. The old paper tube on one
eye, with your hand on the side of it with an apparent hole through the
middle of your hand experiment comes to mind. I'm only talking about
static data here ignoring depth and such, various hologram toys exploit
that aspect of the brain.

> 
> Imagine a scenery with some objects in foreground and a far away background.
> Then take a camera and make a film during moving the camera in the same hight
> with constanst speed from the left to the right. The objects in foreground
> will have another position in an image after the movement but the far away
> ones are still at the same place in images from the beginning and the end. The
> same effect can be seen when you close your left eye and the you right one and
> watching your fingers in front of the wall. The fingers seem to jump. So a
> movement and the two human perspectives are the same despite from the fact
> that you have only the first and the last image instead of a plenty of images
> if you move the camera. Untill here everything is obvious.
> 

I wish I had nifty links but I don't!

t.

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