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Steve Smith wrote:
> I was shown a stereo glasses system today and I found my self wondering why
> so much time is wasted on this slightly disturbing trick which has nothing
> to do with 3D visualization. In fact it reduces the realism of a scene.
>
> If you stand in a landscape or in front of a building and cover one eye,
> your 3D perception does not change. This is because 3D vision is gained only
> from perspective, light, and head movement. Stereo vision evolved only to
> improve the dexterity of your hands and has no impact beyond arms length.
don't forget your brain knowing what size something is so can work out
how far away it is, and that the clarity of the air dulls things
farther away, which is another clue to your brain.
> Head mounted displays with head tracking are the only way to truly immersive
> 3D. But why have they never caught on ? I always thought they would be
> ubiquitous by now.
>
> Steve
parallax can be useful up close, as you say, but i think it could also
be useful when things are moving fast, so that the higher level clues
take the brain too long, but this means the head mounted stuff needs to
be very light and very position accurate and also give clear images
with very fast updates, i don't think this is possible yet,
commercially anyhow. But when it is, people will probably buy it, of
course there will probably be a series of false starts, with equipment
that's not really good enough, but then development is mush less risky
if people pay for it as it happens.
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