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How would you create a 3D hologram chamber? Answered

Okay, yes, I'm crazy. Now that we've put that behind us, I had a dream about a room where it could be turned into a 3D hologram environment room. Sort of like what they did in the jetsons movie from a while back. Basically, I walked in and found myself in a room where there was a street filled with people, but I could walk through these people and I even stepped out and got "Passed through" by a bus. I woke up immediately, and thought, "That would be AWESOME!!!!" So I stayed up trying to figure out a way to do it. My idea is currently to take 3D animation software and use a series of projectors rigged from the ceiling to project images onto the 4 walls of my basement. Then I would use the 3D glasses that you get in the theater to make it all 3D. This would be a very expensive way to do it, but I think it can be done. Any ideas, even if it is only speculation, would be most welcome.
Sincerely Yours,




Best Answer 5 years ago

In a 3D movie you are looking at 2D images projected onto a 2D screen.
Do this on 4 walls and you need 4 expensive projectors, and expensive film, and they will only work when you're looking at them from the middle of the room at the right angles.
Try to find a price for just 1 3D projector.


I saw a vr system at a university that projected onto the outside of a sphere that the user was inside of. This eliminated the distortion a user would see when approaching a wall and, since the sphere was on rollers, the user could walk inside of it. This video has a similar system, but the user has a headset:http://m.youtube.com/watch?v=duqMRfpcGFw

You just need a really large, really light, partially transparent sphere. :)

I may not have a spere, but I set all of this up with permission in a lighthouse and it works fairly well. All I really had to do was stretch the images and then convert it to 3D. The real problem lies in the fact that the images are slightly concave due to the curve of the walls despite the compensation. It took me 6 weeks to do, but what a gratifying feeling. I also want to thank Cardigan Gremm for letting me use his house, and Damon and Sara Tiller for beleiving in me enough to pay for my trip to Maine. It simply would not have happened without them.

That would be cool. It's been a staple of science fiction for AGES, having holographic emitters capable of tricking the mind into thinking something is there. In star trek, they make the images coincide with force fields to actually give the images the ability to touch.
Both of those technologies are still far out.

Your method of projecting a user-based 3d would totally work, in fact, its been done. The HARD part is tracking where your head is, because your viewing angle to each wall will change the perspective that needs to be faked on the wall. You may have seen that music video lately that uses a 3-surface room and a treadmill to make an entire video, only changing the projections to suit the camera's location so it looks like a real 3d environment.

I do wonder now, about the projection angles and the illusion, and how they coincide... If you have seen the most recent Mission Impossible movie, they had a scene where they are tricking the hallway guard by projecting an image of an empty hallway onto a peice of canvas (Or some super high tech cloth with light refracting capabilities, I don't know.) while they moved up behind it. but the image had to move when the guard moved so that the illusion wouldn't fail... When it came to the point where the computer generating it had to focus on multiple people at once, the illusion completely fell apart because it couldn't compensate for the multiple angles of perspective... Perhaps... I'll have to study this anomaly more before I can actually act on this. The human mind has mechanisms for distinguishing the real from the fake, one of the programs run by the mind looks for lines or seams where there should be none... like the corners of the room, where the walls meet, and where the floor begins. This could pose some serious difficulties when trying to trick your mind's depth perception into thinking it sees an unlimited horizon. A lot of work to be done here... I guess I'd better get to it. Thanks for your input, I think that it will prove to be exceedingly useful in this endeavor.
Sincerely Yours,

I think you've already hit on the best idea yourself - I've seen rooms like that on TV (there was quite a funny sequence of James May trying to shake hands with a computer-modelled 3D avatar version of himself.