| freeupyermind |
| http://www.theregister.co.uk/content/54/32791.html they use 2 lcds and a 'parallax barrier', hmmm, i wonder if we couldnt rig one of these up ourselves, i have a feeling it could work with our projectors, but not sure about using the actual ones out of the laptop itself, come on, someone else here has to be interested in this as much as i am, i mean, lifesize 3d, who wouldn;t want that! |
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| MrPoopy |
I don't think that would work with a projector.
But if you want 3d pics from a projector, it's not hard to make your own red/blue stereoscopic pictures. |
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| freeupyermind |
| no way, i dont wanna wear ne funky glasses, i like this idea, but im still not entirely sure whether or not it would work! |
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| Dwiel |
Sorry, but you cant pop one of these into your projector and get a 3D Image on your big screen...
The way it works is with special filter, let your right eye see one picture and your left see another. It does this with optics on the screen. unless you were able to make a screen with these optics, and then project 2 different images onto it, you might achieve what you want, but I am unsure.
I could be wrong, but I am pretty sure that this system only works because they can sperate the image going to each of your eyes.
If someone can explain this better than me, I'd appreciate it, as I know that I probably didn't do a very good job... :-(
well, I hope I helped some anyway ;-) |
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| MovLab |
Hello freeupyermind :
"come on, someone else here has to be interested in this as much as i am, i mean, lifesize 3d, who wouldn;t want that. "
MovLab Here: I Too Am Interesteed In This!!
I'm Working on A Way, For DIY, And Will Post When I Have Solid Info...
Many Ways...
Cheers,
MovLab :) |
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| freeupyermind |
| well if you dont wanna post untill you have solid info you could at least email me with your idea! |
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| MrPoopy |
I read a while ago about Ford using a new type of hologram in trade shows. Apparantly its better than just a 3d effect. It's like a real hologram, using lasers and LCD panels.
I don't think it's anything that an ametuer is going to reproduce. |
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| ace3000_1 |
I tend to agree with dweil, the way this works is more then likly with 2 sheets of special filter in the back of the lcds backlight, if it isnt however, the lcd maybe used as a projector if the filter is in the actual lcd, with that being said it doesnt mean that it will work with projection as u are blowing up an image that is designed not to, and in this case it may very well look ****, this 3d lcd is designed to trick the eyes and eyes cant be tricked with xga reso at 100inches too easily. If u want a true 3d experience then do things for real lol
Trev |
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| dracul |
The problem is the source video. Unfortunately you also have to have material presented that was photographed or Computer Generated from 2 separate perspectives.
3d photography works by positioning 2 identical lenses side by side with about 2.5 inches space(about the same as your eyes spacing). You then present these 2 seperate perspective to their respective eye. So you mind find software that can simulate the 2 separate perspectives but it will be **** compared to the real thing. If you want to use glasses its not a problem.
You place a vertical polarizer on the left eye projector lens and a horizontal polarizer on the right eye projector lens.
You match the polarizers on your glasses to corespond to the ones you put on the projectors lenses.
Ofcoure you would lose a lot of light and you still need to get the 3d video source. |
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| freeupyermind |
| the laptop itself has the ability to (in real time) change any 2d source to a 3d image! Obviously i see it wouldnt work now, i would still like to see what movlab has to come up with! I would like to find a way tho that doesnt involve crappy glasses, they are too much of a bother imo! |
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| ace3000_1 |
| quote: | | I would like to find a way tho that doesnt involve crappy glasses, they are too much of a bother imo! |
a bottle of scotch should do the trick lol mind the focusing though |
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| freeupyermind |
| LOL, but it has to be able to be 3d to everyone even those who are underage! |
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| MrPoopy |
Crappy glasses are too much of a bother? Any of you ever experienced really good 3d that used crappy glasses?
I haven't experienced a lot of 3d stuff, but I remember a long time ago, one of the Nightmare On Elm Street movies had about 20 minutes of 3d footage right at the end of the movie. You got your red/blue glasses free and the effect was extremely good. Even with crappy red/blue glasses. |
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| Won |
At the very least, you'd have to use something different from a regular screen. You'd probably also have to use rear projection. Some company or researcher has done this already for multiple views.
The Ford hologram (it's not actually them who make it) is a true hologram, but doesn't require lasers and such to view. This one is certainly beyond the hobbyist, but you CAN make your own smaller holograms. In fact, it was recently shown you can make rudimentary 3-D shapes by scratching circular arcs using a compass onto a reflective surface.
Anyway, it's incrementally more difficult than making a projector, but it's a big increment over something which is pretty much on the border of what you can expect to do as a hobbyist.
-Won |
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| Video Freak |
| Hey MR poopy( LOL) yes the cheap 3d glasses trick does still work, granted they no longer use the blue and red filters they are clear lenses but at places such as disney world they use the glassess with great success, Bugs life, honey I shrunk the audience and back in the Day Michael jacksons thriller, this reminds me what was that sega game that was made in 1990 area that was a western video game but It was all done in holigrams?:D :confused: |
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| VvvvvV |
| some nvidia drivers used to support stereoscopic i beleive, perhaps the new ones do also |
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| Won |
VideoFreak --
That SEGA game wasn't a hologram. It wasn't even 3-D. They used mirrors to "float" an image. The image wasn't flat, which made it appear somewhat 3-D.
VvvvvV --
Keep in mind that it is necessary (but not sufficient) for the video card to support stereo viewing. The hard part is still going from a 2-D source to a stereo source! It is an open research problem, and it certainly cannot be done in real-time yet.
-Won |
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| PaulH_1980 |
I used to live in Tampa, FL about 2hrs from Disney's Epcot Center. They had a 3D movie there called "Captain EO". It was funded by Disney, produced by George Lucas, and starred Michael Jackson.
Captain EO Review
This was the "BEST" example of 3D I have ever scene in a movie. It did require the use of glasses but they were not the cheap Red and Blue ones. I believe they were more like the polarized ones people have referred to as they were light grey lenses in the glasses. The theater for this was about the size of a normal "smaller" theater.
I remember going there with a friend, and seeing this for the first time. At the very begining, sitting in the back row, an asteroid comes almost 40 feet out of the screen right up in front of your face, and explodes. It was one of those effects that was so good you would see everyone in the theater jump in their seats. The 3D in this movie was amazing and objects would appear to be coming anywhere from 30 - 50' feet out of the screen. It looks as though unfortunatly it may no longer be at Epcot, as I read it ran until 1994, but it is well worth seeing if you ever get a chance.
I also came across a small blurb on TechTV's website about 3D television and some of it's draw backs. Anyway that is also worth a look.
TechTV - "No Goofy Glasses Required"
-Paul- |
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| VvvvvV |
i'm sure that there's tons of 3d vhs out there with steroscopic viewing... i watched one on a spherical cinema screen in paris once called la geode. loads of cinemas have shown 3d, usually space and science documentaries.
wasnt jurassic parc or something like that recently done with a 3d version?
for the nvidia drivers i was thinking more along the lines of 3d games. certainly some old nvidia drivers had an implementation to create rgb virtual stereo image from any 3d game. possible still today.
i often think that it is about time that people develop cheap infra red distance detectors coupled with Cameras to create photo realistic 3d images of invironments for use on the PC...
lots of adverts already use the 3d freeze frame type effect, surely houses can be measured and filmed simultaneously in infra red and focused cameras to make great scenes...
ez |
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| Unclebob |
Hi guys
quick tutorial on this.
3D images are generated by sending the left view to the left eye and the right view to the right.
The easiest method to understand how this can be achieved is the old red and blue glasses novelty toy.
With the red blue glasses the lenses in the glasses stop the left image being seen by the right eye and the right image being seen by the left. If you look without the glasses you can see both images side by side.
In Disney they achieve the same effect by using polarised lenses instead of red and blue.
Projectors then send the right image and left image with light of different polarisations and they use a special screen that preserves the orientation of the reflected polarised light. In effect a more sophisticated of the red blue glasses above.
3D shutter glasses in PC games do similar.
In effect they generate one frame for the right eye perspective and the next for the left. The glasses work in synch with the frames stopping the left eye image from being seen by the right eye and the right eye image from the left. This gives you that 3d effect.
The sharp notebooks use a barrier. Views for each eye are on the screen at the same time but the barrier directs the left image to the left eye and the right image to the right eye.
Its use as a panel for a 3d projector would be limited as the barrier is engineered to be viewed as a monitor from a certain distance. A projected image would not preserve the barriers work of separating the images, as this effect would be magnified as a result of the projection itself and hence lost.
You can use shutter glasses and projectors to view 3d.
It takes a lot of fiddling about though as the panel you use needs to be stripped down and have an excellent response time...You also need to persevere with refresh rates (which are not the same thing as response times some people would have you believe).
I have this working in a number of games but I would suggest waiting until later this year when one supplier of 3d glasses will release a driver specifically for shutter glasses and LCDs and or projectors.
:cool: |
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| Poseablejesus |
| quote: | Originally posted by Unclebob
I would suggest waiting until later this year when one supplier of 3d glasses will release a driver specifically for shutter glasses and LCDs and or projectors.
:cool: |
Which supplier is that?
It would be really cool to be able to use shutter glasses on my projector, but I was under the impression that they wouldnt work on projectors.
Any more info? |
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| Unclebob |
Sorry hadn't realised you'd asked.
Here is the thread.
edimensional specifically mention LCDs, Projectors and Laptops....
http://forums.stereovision.net/view...orum=2&start=15
We will have to wait and see.
If it does I will post a review.
Incidently with a Nivida card, good high refreash rate CRT and the Nvidia Stereo drivers you can use the edimensional shutter glasses or even an old pair of red blue cinema ones.
Get the refresh rate as high as possible. Head aches not really an issue.:cool: |
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| Doon1 |
Let's make a Stereoscopic projector. It would actually be rather simple for you guys that have built your own PJ. You would have to build two matching PJ's in the same casethat will overlay one image over the other near perfectly regardless of the thriw distance which will require adjustment hardware within the PJ case. The images would use two different lenses. one lens would have a horizontal polorizing filter and the other a vertical polorizing filter. About $20 a piece. A non-polorizing screen can be homemade for about $100. This will only work for 3-D applications such as games, 3-D cad, and JPS or JPG image/video files. It will require a dual head Nvidia video card and the stereo drivers. It will be the same as the 3-D at Disney and the IMAX theaters not red/blue. I've drawn up plans for it some time ago but lacked the time to build it so I bought a X1 instead and use that for stereoscopic game play. There's some ghosting but that can't be helped due to the nature of the projector.
If you have two panels and the means to make two projectors I have a ti4400 and will make the CAD drawing to contribute to the project.
John |
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