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The human eye sees only a very limited space clearly and everything outside of this focus is blurred and filled in by the mind to edit out things like micro-movements, blind spots, eye veins, after images, floaters (for most people), and even your own nose to allow for what appears to be a seamless view
of the world.
The time taken for cognition of visual stimuli is just under 150 ms.
Unless I'm reading it wrong, the fastest eye-tracking programs are somewhat faster than this.
The Perceptuarium is a gallery of video screen paintings which looks like any other gallery viewing to whomever, (is that right? whomever?) stands on the platform and examines each exhibit, because eye tracking software produces clear images on the screen only where the observer is looking at any given micro second.
Observers not on the platform will be given a display of how the human eye really sees... blind spots and all.
The after images of micro-movements and the interference patterns they reveal are especially captivating... or nauseating depending on perspective.
http://www.ted.com/...in_ted2009#t-191856
Thanks [pashute], cool TED talk. [2 fries shy of a happy meal, Jun 15 2015]
The blushing nude
The_20Blushing_20Nude
[theircompetitor, Jun 16 2015]
[link]
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Your third paragraph, first sentence is a run-on with 2
verbs. |
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I like the idea as it is a way to prove to yourself
that what they say about vision is actually true.
Unfortunately I think this would only work with an
apparatus set up so that you get a different image
in each eye. I'm pretty sure the brain generally
fills in blind spots form one eye with data from the
other. In any case, this apparatus could prove
that one way or the other. |
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One practical application of this technology could
be to improve VR performance. If the area that
the eye is focusing on is rendered with super high
quality, and the rest of the view is rendered with
less accuracy, the perceived quality could be
increased dramatically without a huge increase in
computer power. Another possibility (though
even more tricky to implement) might be an
adjustable lens that compresses 70% of the
viewable area of the display into the current focal
area, allowing the perceived resolution to be much
higher without having a high resolution display
that can cover all directions that the eye can look. |
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I'm a bit confused by this, are you saying that you're
watching a series of video screens that change their picture
based on readings of eye movements? |
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//I'm pretty sure the brain generally fills in blind
spots form one eye with data from the other.// |
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The brain will fill in missing bits from whatever it can
get, particularly the imagination and memory. You
never see what you are looking at - instead, you see
the model that your brain builds based on data from
the eyes. This model can be made very convincing
based on minimal evidence; it can also, of course, be
stunningly wrong at times. |
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Thanks [RS]. I missed a 'which'. |
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//are you saying that you're watching a series of video screens that change their picture based on readings of eye movements?// |
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Exactly. You as the viewer would see the display as though it was a seamless image. Everyone else would see what your eyes are really seeing. |
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Douglas Hofstadter in his book Metamagical Themas
writes about his experience in the 90's with the eye
tracking text machine which totally changes the text
around the place your reading, and sets new text in the
place you are looking as you read it. |
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As the occasional manager of the Rapid Eye Tracking
brain research lab at Bar Ilan U, I saw similar
applications. |
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There is an artist and programmer who displayed at the
Israel Museum and later around the world, and who has
at least one speech on TED about these kinds of apps as a
form of art. The guy who made the blinking eyes app,
that add another pair of your recorded eyes at a certain
interval to the screen. Maybe someone has time to look it
up and add a link. |
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Could be enhanced by projecting (possibly disturbing) images onto the area of the screen that is only in peripheral vision. As your eyes dart over to see what that evil shape was, it's not there - it's over there.. and now there... but what is it? Am I imagining it? |
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If we are going the evil route, for a single person, altering the retina images so the brain has to extrapolate a paradox of images would be very frightening. |
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Yes, I also see an application for monitors showing an ordinary spread sheet rather than the halfbakery to anyone looking over your shoulder... |
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I am surprised that there are not advertisements based on the visual persistence effect. There is a display of that in the SF Exploratorium and it is so cool, but I have seen it nowhere else. We have mooted that principle about on the HB before. The images happens only if you turn your head just so: you see an Eye. On looking back there is just a flickering red bar on the wall. Did you imagine it? Is it looking at you? Does it want you to buy something? BUNGCO wants it to want you to buy something! |
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