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by provemewrong 3676 days ago
The problem is your eyes can focus at different focal planes: on an object, past an object etc. I'd imagine it would be pretty jarring if the software just blurred everything around an object that happened to be at the x, y coordinates where your pupils were pointing.
1 comments
jsprogrammer 3676 days ago
You project into the scene to discover the distance of the object, then set the aperture and/or focal length of your camera as appropriate.
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ascorbic 3676 days ago
This doesn't help. You need to physically change focus in your eye. Your brain uses the feedback from the eye muscles to ascertain distance. If your eye muscles don't need to adjust focus, then they're reporting that everything is at the same distance. If this disagrees with the stereoscopy or the context then you will get nausea.
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hodwik 3676 days ago
> "Your brain uses the feedback from the eye muscles to ascertain distance."

Source? I'm under the impression that focus is a brain-first, muscles-second process. If the object was already in focus, I don't think your eyes would mind.

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ascorbic 3676 days ago
It's called the vergence-accommodation conflict. There's quite a bit of literature on the problem in relation to VR. Here's one paper picked at random from Google. http://jov.arvojournals.org/article.aspx?articleid=2122611
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hodwik 3676 days ago
If that were true people with only one eye would be nauseous all of the time.

As I understand it (which I may not) -- this paper (which purports to be the only paper to have tested this effect), says that they test divergence by having the images displayed at various distances to replicate varying levels of divergence.

They see that the closer it is to a realistic vergence/accommodation match the more comfortable the eyes.

However -- it should obviously be easier to tune a 3D image which is at a realistic distance than one which is not.

It seems to me, they may very well just be showing that effect, just showing that it is easier to adjust the illusion to render realistically at distance. This would make perfect sense.

This would then just argue for better tuning.

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Natanael_L 3676 days ago
Light field displays?
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marvin 3676 days ago
What do you do when the pupil is ambiguously pointing at an object 30cm in front of your eyes, and a mountain on the horizon?
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hodwik 3676 days ago
Wide DOF
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