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  • 3D displays have already taken you to alien worlds in the movies.

  • Soon they'll take your doctor inside your body.

  • Since we decided to spice up the cave walls back at Lascaux, we have been obsessed with creating ever more lifelike and realistic images, and that includes 3D.

  • Whether it's a Hollywood gimmick or the next generation computer display, our visualization technology has reshaped the way humans and machines interact.

  • Tech companies like Apple are buying up patents to create glasses-free 3D displays.

  • So you can bet that 3D is still in our future.

  • But is it going to be like the movies?

  • Are we going to have free-standing, floating holograms, 360 degrees around, like in Star Wars?

  • R2D2 coming up and shooting out that image of Princess Leia from whatever and...

  • *Help me, Jonathan! You're My Only Hope!*

  • Okay, that's creepy!

  • No one told me we were doing that. Can that go away now?

  • Thanks.

  • We don't have the technology to make those kinds of holograms, and maybe we never will.

  • A lot of that's due to the bad information we've had about holography.

  • For example, do you remember when Tupac Shakur blew everyone's minds by showing up at Coachella 2012 in hologram form?

  • Yeah, see that wasn't a hologram. That was actually this really cool angled mirror illusion called Pepper's Ghost, which we've been using for more than a century to simulate hauntings.

  • So what exactly is a hologram anyway?

  • When you take a picture with a normal camera, you're really just recording a single splash of light across a two-dimensional surface, like film.

  • But a holographic camera, well, that uses a laser beam splitter to split into two beams of light.; you've got one that's just a clean reference signal, and another one that you've run over a three-dimensional object.

  • So you can measure all those nooks and crannies and create a light map of that object.

  • So could we ever get to that free-standing hologram?

  • Well, one way we might try is by using a lot of different projectors to project light into a cloud of fog.

  • Now, the fog would actually act as a three-dimensional movie screen, and particles within the fog would actually reflect the light back to us.

  • Maybe we're even going to come up with technologies we can't even dream of right now to make holograms possible.

  • But here's a paradox for youwhen did 3D become a gimmick?

  • I mean, our world is in three dimensions.

  • It's 2D that's the gimmick.

  • We build machines in 3D, we play with our pets in 3D.

  • I think the ultimate human-computer interface is one where we just strip away all of that division so that our non-computerized reality and our computer experience are merged as one.

  • I mean, imagine that you are a tele-surgeon.

  • You've got a hologram of the patient in front of you. The actual patient is 100 miles away.

  • You want that to be as accurate and seamless as if you were actually in the room with a blade in your hand.

  • Or imagine how much easier your world would be if we could actually build the holographic interfaces you've seen in movies, like Iron Man, where you move the data around.

  • It comes to youyou're no longer playing in this two-dimensional space, it's playing in your world.

  • Holography might even restore sight to the blind!

  • You might be able to use a combination of gene therapy and special glasses that actually beam holograms back to your eyes to restore your vision.

  • And of course, holograms will play a big part in one of my favorite subjects of all time: space travel.

  • We can already simulate the elements of space travel using something like the CAVE2, which is at the University of Illinois in Chicago.

  • They've even taken footage from the Mars landings and they can give you a full three-dimensional simulation of walking around on Mars.

  • And in the far future, Mars colonists might get a little homesick, so then they just go ahead and jump into CAVE3, and visit sweet home Chicago.

3D displays have already taken you to alien worlds in the movies.

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The Future of Holographic Technology

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    阿多賓 posted on 2021/11/14
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