Mixed-Reality 3D Volumetric Projector 112
First time accepted submitter Gortu writes "We are describing and demonstrating a 3D Volumetric Projector (YouTube video); in short words: a device that enables mixed reality. The 3D projector has very poor quality, we just have 10 rotational voxels (as we are using only 10 regular LCD projectors), but is proof of concept for developing a commercial solution."
Yawn (Score:4, Insightful)
10 projectors and smoke... quick someone give them a patent.. lol
Re: (Score:3, Funny)
Re: (Score:3, Informative)
And don't do drugs.
Oh. Damn. I mean, I was gonna, but you talked me out of it.
Re: (Score:2)
This is not a new idea. (Score:3)
Re: (Score:3)
phase (Score:1)
A laser can give out phase, which results in spatial cancellation of multiple (synchronous) rays. An LCD cannot. Don't see what this guy tries to achieve here...
Re: (Score:2)
Lasers can't do complex shapes very well..."
Casio (http://www.superslimprojector.com/) and Microvision (http://www.microvision.com) are both going to be pissed when they find this out, considering that they both have had laser powered projectors on the market for some time now. Just imagine their faces when they find out after all the years of research and development and even several years on the market that their projectors really don't work. I think it should be a crime for someone to change the rules of physics after someone has successfully
More impressive: (Score:2)
The smoke-and-projectors system looks like a nice prototype, but it's a long way from practical. Needs more projectors, and some way to maintain uniform fog distribution in a room.
Re: (Score:1)
Needs ... some way to maintain uniform fog distribution in a room.
Or a way to measure the fog distribution in real time and adjust accordingly.
Re: (Score:3, Insightful)
Needs ... some way to maintain uniform fog distribution in a room.
Or a way to measure the fog distribution in real time and adjust accordingly.
Or a way to redundantly re-state the quoted post.
Re: (Score:2)
Or no annoying, eye watering fog at all. Jusy sayin.
Re: (Score:1)
Thank you Mr. Fog Machine...but of course that would eliminate slashdot...and then where would you be?
Just sayin.
don't cry, little one (Score:2)
Wow. Where'd that load of butthurt come from?
Come at me, bro (Score:2)
Absolutely LOL! Way to overreact considering there were snarkier comments. Seriously, are you the special friend of one of the Smokapalooza developers? You should get off the internet if snark gives you the vapors to such an extent, or make sure there's a fainting couch next to your computer at all times.
Re: (Score:1)
I think he meant, adjust the brightness/darkness of the projection to compensate for the reality of the fog at that moment...
not redundant at all, actually an entirely different, and potentially extremely interesting, idea...
Re: (Score:1)
Re:More impressive: (Score:5, Interesting)
Re: (Score:1)
Re: (Score:1)
Re: (Score:2)
But not immersive, I wouldn't want to be nearby that 6000 RPM rotating mirror :-)
Actually, from the stats displayed 0:26 into the video: Spin rate 15-20 Hz. I think that can be done safely, especially if you enclose it in a clear co-rotating cylinder to avoid air resistance.
Re: (Score:2)
The video mentions 15-20 Hz. That is 900-1200 RPM: still impressive, but not connecting-rod-throwing impressive.
Re: (Score:2)
Re: (Score:2)
Re: (Score:3)
"and some way to maintain uniform fog distribution in a room."
I know some college buddies who have actually figured out how to do this- completely inadvertantly mind you. The fog itself in their case also has the added effect of neuromodulation-making a room full of people actually impressed (if not downright giddy) about 10 projectors sitting on the floor showing a cruddy light show.
Re: (Score:2)
No smoke (that I can see) and no glass aquarium
Re: (Score:2)
Several things that can be improved (Score:2)
If by several he means everything..yeah.. that's a good point. I can't believe I just sat through that.
Add budget, get holodeck (Score:2)
Re: (Score:1)
A better way i dreamed up - with water guns (Score:4, Interesting)
My best idea is to use a hundred pulsed water guns and a laser that can be precisely aimed on the fly. You emit downward-dropped, fast-moving squirts of water algorithmically timed so that when the drop reaches the "pixel" the laser also illuminates that spot, making a pixel appear in midair. If the guns are in a row, that's a 2D plane. You could do this with a 100x100 water guns to make a 3d system, where 2d is the box of water guns on the ceiling, and 3D is when the drop is illuminated.
Make sense? I so want to do this!
--
Every CS major knows the time/space tradeoff. Those majors never get taught the third tradeoff of the set: comprehension
Re: (Score:3)
Like this [youtube.com]?
It's very cool but seems impractical. Noisy, lots of water needed, and I think color is going to be tricky, as how are you going to reach a drop that's enclosed in different colored drops?
Re: (Score:2)
While cool, it is really note that close to what the GP is proposing. This is essentially just a defined pattern of water going through a sheet of light to make a pattern.
The GP is proposing a complex combination of water pattern with lasers to illuminate it to create a 3D image.
Re: (Score:2)
Re: (Score:2)
The math isn't even that hard once you realize how DLP works. DLP plus a huge version of an inkjet printer nozzle.
Re: (Score:1)
Re: (Score:1)
Re: (Score:2)
Re: (Score:2)
You wouldn't need an aimable laser, you could just use a DLP projector. The main problem I can see with the system is that you would have a tremendous amount of input lag for the bottom half of the display until you could write an algorithm to predict where you can place water droplets early so they wouldn't obstruct view, but would probably be used/lit towards the bottom of the screen. You'd probably just need an engine that could keep track of a 100x100 grid and which items on the grid you could light up
Great idea; some thoughts (Score:3)
I think that's a great idea.
Some problems:
* Since water is transparent, voxels closer to you won't block ones farther from you. Everything will be translucent.
* Reflections and refractions will cause unintended lighting.
* Drop size and timing precision will limit resolution.
A few thoughts to make it work well:
* The drops will take a while to fall. For playback this is fine, but for realtime use you'd need to release drops in case they might be needed. Thus you need a gener
Re: (Score:3)
I just saw this video the other day where they use a device to deliver precisely timed drops of water which could be used for that. http://youtu.be/cNI-LIVs-to [youtu.be]
The lasers could be positioned so any drop could be illuminated at any time without being obscured by other drops. You might have to have a laser scanner between every other row, or use mirrors to direct the laser to the row to be illuminated. I don't know if mirrors are fast enough
Re: (Score:3)
Nope. Kermit the fog.
High quality 3D (Score:4, Interesting)
This approach by Sony shows much more promise in the short and medium term:
http://www.youtube.com/watch?v=inlyXhKDQwg [youtube.com]
No walking through the image, though.
Re:High quality 3D (Score:5, Insightful)
Re: (Score:2)
Not slashdot worthy (Score:2, Informative)
This video is lame. What did these guys accomplish? It is kind of hard to tell. 10 projectors + smoke. A guy claims there is a sphere -- well I do not see it. Now he says he is walking inside the sphere. Still do not see it.
What the hell is this?
Re:Not slashdot worthy (Score:4, Informative)
What the hell is this?
it's a pitch to try and score some funding.
We need funding and are looking for people interested in participating in this. If you know someone, shoot!
Re: (Score:2)
What the hell is this?
I think that smoke is the kind you're supposed to be careful about inhaling.
Re: (Score:3)
Finally, we'd like to discuss as to why we are opening this up. The answer is actually very simple--because we have the power to do so. The world is not in a good shape and we believe there is a problem of power. There is imbalance with giving and receiving. We would like to add our two cents by showing things can be done different--that there is a way of giving things that benefits both the giver and receiver. That's why we're offering our consulting services to anybody who is interested in pursuing this endeavor. We also opened a blog at volumetricprojection.blogspot.com where we will be posting news related to this project.
Finally, a philosophical note. Never forget: you have power. And the enemy of this power of yours is fear. That's why we are constantly bombarded with bad news. That's why accepting things you don't like is giving away your power. We believe it is a good time to change things in the world, and we know you can be part of that. Also, do not use your power in an evil way. You can be assured evil things will come out. Use your power with goodness, and we'll live in a world where our grandchildren will be happy to live in.
So, we hope that this project will crystalize soon, and that all the changes that are happening in the world will not lead to an evil outcome. You can be part of a good change. Don't forget.
Personally, while I wish them luck in their endeavor, I also find their proof of concept very lame, and these philosophical musings ramble around some potentially decent points, but are out of place. They can sort of project very basic geometric shapes, if you're willing to put up with lots of smoke and very poor resolution, with poor color. It's not ready even for a YouTube preview, let alone
WAT (Score:2)
Re: (Score:1)
Seems like a lot of smoke and mirrors. (Score:2)
Re: (Score:2)
What about those new laser-based projectors?
Smoke and ... (Score:1)
Use eye tracking masks and choice of smoke/gas? (Score:2)
Ok, interesting idea.
One way to make it better would be to use eye trackers. Then the image from each projector would mask out a small area around each users eyes. if you're going to have an installation using hundreds if not thousands of projectors, the expense of tracking the eyes in 3D space and calculating the appropriate mask for each projector shouldn't be too great. If you don't have the precision and time responsiveness necessary, just mask out the entire face using commercially available face r
Re: (Score:1)
Far Out (Score:1)
LolWut? (Score:2)
Well, I for one welcome our new smoke filled virtual future.
But seriously, that was the assiest demo I have ever seen. Are they kidding? Maybe it's a viral ad attempt.
A better version.. (Score:1)
Re: (Score:1)
Re: (Score:2)
Wow...a Victorian Era Steampunk 3D Projector (Score:2)
Never thought they could image a Steampunk version of Prof. Lunazzi's 3D screen - http://www.physorg.com/news156072878.html [physorg.com]
Wait...using vapour and one LCD projector per voxel is "serious" not Steam age retro joke? What???
Pink Floyd Laser Show? (Score:2)
Seriously, the local planetarium used to put on laser shows with fog machines and way cooler effects than this, they worked on the same principal. Not to mention the music was a lot better.
Pretty lame.
A hidden message (Score:3)
Well, not so hidden - it was spoken at the end of the video:
"A philosophical note: Never forget, you have power, and the enemy of this power of yours is fear. That's why we are constantly bombarded with bad news. That's why accepting things you don't like is giving away your power...."
I think this is a great philosophy. How often do you watch the news and everything is gloom, doom, collapse, corruption.... Rarely do we hear about the good things people do.
I expected something without fog.... (Score:1)
intergrated head tracking (Score:2)
fVisiOn Light Field Projector (Score:2)
fVisiOn light field projector demo, using animated Hatsune Miku. Check out the part where the mirror is placed behind her:
http://www.youtube.com/watch?v=u1E_LgLaiRE [youtube.com]
Re: (Score:1)
Re: (Score:2)
Again, a rotating mirror at 6000 RPM
There is no rotating mirror, this particular display technique uses a completely different operating principle. The image appears floating above a flat surface, which you can put your hand on. In some of the posted videos, the presenter takes off the cover, showing the projector array beneath.
looks like shit (Score:2)
title says it all.
It's all smoke and mirrors (Score:1)
Re: (Score:1)
Re: (Score:1)
Re: (Score:2, Funny)
Re: (Score:2)
And how do we get thanked?
You export your poor excuse for culture to us at every opportunity. Gee thanks buddy, can we have some fries with that too?
Re: (Score:2)
Re: (Score:2)
It ain't hatin, its just we in the USA got legitimate beefs!
meh, You showed up for the last five minutes of wwII while we fought off the hun, it's only cause the japs gave you a spanking that you even bothered to get out of bed. Grand father used to say "the only thing the Americans don't have in their packs is an Ice Cream maker"
As for the, ahem, aussies they had to show you how to park your planes so they wouldn;t get blown up while they were parked on an airfeild, tsk tsk.
America invented the Nuclear Bomb and Canada responded with Bryan Adams, and for that Ame
Re: (Score:1)
BAM! You release that bitch harpy Celine Dion on us like a fricking Nazgul! And then when we were still reelin from that attack you hit us with Nickelback! WTF Canada!
Don't forget Justin Bieber!
Re: (Score:2)
~Whoosh~