If you guys have not heard of the Omega 3D system, it's a lot like dual projection passive polarized. The main selling point seems to be that you can use a regular screen or wall. Unlike passive polarized that needs a silverscreen or a similar reflective surface to keep the integrity of the polarisation intact.
It's a type of anaglyph, but the result is almost full color with the persistance of frames to each eye, if I understand correctly. Some users report the 3D is phenomenal and are very happy with it. While there are some that report that the difference in color between each eye can be bothersome.
The guy that makes it has been using a Quadro card to game and watch 3D, since 3D Vision/3DTV Play does not support dual out.
Anyways, check out his latest big screen gaming video on YouTube, it looks really sweet!
http://www.youtube.com/watch?v=oBBZry-2gSE
If you guys have not heard of the Omega 3D system, it's a lot like dual projection passive polarized. The main selling point seems to be that you can use a regular screen or wall. Unlike passive polarized that needs a silverscreen or a similar reflective surface to keep the integrity of the polarisation intact.
It's a type of anaglyph, but the result is almost full color with the persistance of frames to each eye, if I understand correctly. Some users report the 3D is phenomenal and are very happy with it. While there are some that report that the difference in color between each eye can be bothersome.
The guy that makes it has been using a Quadro card to game and watch 3D, since 3D Vision/3DTV Play does not support dual out.
Anyways, check out his latest big screen gaming video on YouTube, it looks really sweet!
I believe the difference in color depends on the projectors used. Some projectorlamps gives only a narrow spectra of each basecolor which will show as differencies in luminance/color/omegafilter. It seems that dlp works better with these than lcd's (at least according to some older news i catched). I'd like a full-hd dual projection rig as my next upgrade/purchase but i still wait since the future for such rigs is very much undecided. :(
In my experience the total 3d-experience from a dual beamer rig still blow anything else out of the water.
I believe the difference in color depends on the projectors used. Some projectorlamps gives only a narrow spectra of each basecolor which will show as differencies in luminance/color/omegafilter. It seems that dlp works better with these than lcd's (at least according to some older news i catched). I'd like a full-hd dual projection rig as my next upgrade/purchase but i still wait since the future for such rigs is very much undecided. :(
In my experience the total 3d-experience from a dual beamer rig still blow anything else out of the water.
Likay,
You have spent a lot of time with your dual projector setup.
The guy behind the youtube clip claims you don't have to align them that well.
Given a 170" screen and 1080p you only need to be 10px wrong to be an inch off.
that is equivalent of almost 50% depth wrong.
I'm not saying he is right just curious what your experience have been.
On such a large screen I imagine it is hard to not be close to 0.5 inches off somewhere in the picture unless you get really good alignment.
Actually he's believe it or not somewhat right. If you align the projectors with "nulled" keystone/lensshift correction the screen will look "bent", especially in 2d. When turning on 3d this effect become close to neglectable.
Anyway i always tend to align the projectors with as precious precision as possible. It's in my opinion more important to get the horisontal alignment right and sacrifice some amount of alignment vertically if you have to. Practically when tuned, my rig is pixel per pixel matched horisontally and at most 2 pixels mismatched (-1 - +1) vertically. It's totally neglectable as a visual effect in 3d. With glasses off there's a tiny scent of blur going on though (cloned views). Too much vertical mismatch will give eyestrain and ruin the experience. I don't know where this effect kicks in but it's far away from the 2 pixels i have. Aligning the projectors wrong horisontally if the pixelwidth matches will only push/pull the image into/out of the screen. It's not eyestraininducing in any way.
Anyway, i'm on vacation right now but if there's curiosity i could post stereoimages/videos on how mismatching/no keystone etc looks like in practic.
Actually he's believe it or not somewhat right. If you align the projectors with "nulled" keystone/lensshift correction the screen will look "bent", especially in 2d. When turning on 3d this effect become close to neglectable.
Anyway i always tend to align the projectors with as precious precision as possible. It's in my opinion more important to get the horisontal alignment right and sacrifice some amount of alignment vertically if you have to. Practically when tuned, my rig is pixel per pixel matched horisontally and at most 2 pixels mismatched (-1 - +1) vertically. It's totally neglectable as a visual effect in 3d. With glasses off there's a tiny scent of blur going on though (cloned views). Too much vertical mismatch will give eyestrain and ruin the experience. I don't know where this effect kicks in but it's far away from the 2 pixels i have. Aligning the projectors wrong horisontally if the pixelwidth matches will only push/pull the image into/out of the screen. It's not eyestraininducing in any way.
Anyway, i'm on vacation right now but if there's curiosity i could post stereoimages/videos on how mismatching/no keystone etc looks like in practic.
A 2px misalignment is only 3,5mm on the screen and should not be a problem when viewing 3D.
In 2D you could use just one projector without glasses.
Requiring glasses to remove the misalignment blur would be strange for 2D content.
The youtube clip was a massive 170" screen and without good alignment I expected the misalignment to easily become greater than 1cm making it pretty significant especially if watching Blu-ray 3D.
As you said, the alignment does not need to be perfect but preferably pretty good.
Unless I'm mistaken it's a problem unique to dual projector setups.
A 2px misalignment is only 3,5mm on the screen and should not be a problem when viewing 3D.
In 2D you could use just one projector without glasses.
Requiring glasses to remove the misalignment blur would be strange for 2D content.
The youtube clip was a massive 170" screen and without good alignment I expected the misalignment to easily become greater than 1cm making it pretty significant especially if watching Blu-ray 3D.
As you said, the alignment does not need to be perfect but preferably pretty good.
Unless I'm mistaken it's a problem unique to dual projector setups.
Thanks to everybody using my assembler it warms my heart.
To have a critical piece of code that everyone can enjoy!
What more can you ask for?
I know that somewhere he said that in the videos he makes, he purposely doesn't perfect the alignment of the projectors. He just gets them somewhat close, so that it better demonstrates the ability of the GeoBox to correct alignment.
The biggest factor in aligning two projectors is having a good projector with optical lens shift/keystone.
The Geobox also does edge blending, so it could be used for surround vision as well I think.
I know that somewhere he said that in the videos he makes, he purposely doesn't perfect the alignment of the projectors. He just gets them somewhat close, so that it better demonstrates the ability of the GeoBox to correct alignment.
The biggest factor in aligning two projectors is having a good projector with optical lens shift/keystone.
The Geobox also does edge blending, so it could be used for surround vision as well I think.
It's a type of anaglyph, but the result is almost full color with the persistance of frames to each eye, if I understand correctly. Some users report the 3D is phenomenal and are very happy with it. While there are some that report that the difference in color between each eye can be bothersome.
The guy that makes it has been using a Quadro card to game and watch 3D, since 3D Vision/3DTV Play does not support dual out.
Anyways, check out his latest big screen gaming video on YouTube, it looks really sweet!
In my experience the total 3d-experience from a dual beamer rig still blow anything else out of the water.
Mb: Asus P5W DH Deluxe
Cpu: C2D E6600
Gb: Nvidia 7900GT + 8800GTX
3D:100" passive projector polarized setup + 22" IZ3D
Stereodrivers: Iz3d & Tridef ignition and nvidia old school.
You have spent a lot of time with your dual projector setup.
The guy behind the youtube clip claims you don't have to align them that well.
Given a 170" screen and 1080p you only need to be 10px wrong to be an inch off.
that is equivalent of almost 50% depth wrong.
I'm not saying he is right just curious what your experience have been.
On such a large screen I imagine it is hard to not be close to 0.5 inches off somewhere in the picture unless you get really good alignment.
Thanks to everybody using my assembler it warms my heart.
To have a critical piece of code that everyone can enjoy!
What more can you ask for?
donations: ulfjalmbrant@hotmail.com
Anyway i always tend to align the projectors with as precious precision as possible. It's in my opinion more important to get the horisontal alignment right and sacrifice some amount of alignment vertically if you have to. Practically when tuned, my rig is pixel per pixel matched horisontally and at most 2 pixels mismatched (-1 - +1) vertically. It's totally neglectable as a visual effect in 3d. With glasses off there's a tiny scent of blur going on though (cloned views). Too much vertical mismatch will give eyestrain and ruin the experience. I don't know where this effect kicks in but it's far away from the 2 pixels i have. Aligning the projectors wrong horisontally if the pixelwidth matches will only push/pull the image into/out of the screen. It's not eyestraininducing in any way.
Anyway, i'm on vacation right now but if there's curiosity i could post stereoimages/videos on how mismatching/no keystone etc looks like in practic.
Mb: Asus P5W DH Deluxe
Cpu: C2D E6600
Gb: Nvidia 7900GT + 8800GTX
3D:100" passive projector polarized setup + 22" IZ3D
Stereodrivers: Iz3d & Tridef ignition and nvidia old school.
In 2D you could use just one projector without glasses.
Requiring glasses to remove the misalignment blur would be strange for 2D content.
The youtube clip was a massive 170" screen and without good alignment I expected the misalignment to easily become greater than 1cm making it pretty significant especially if watching Blu-ray 3D.
As you said, the alignment does not need to be perfect but preferably pretty good.
Unless I'm mistaken it's a problem unique to dual projector setups.
Thanks to everybody using my assembler it warms my heart.
To have a critical piece of code that everyone can enjoy!
What more can you ask for?
donations: ulfjalmbrant@hotmail.com
The biggest factor in aligning two projectors is having a good projector with optical lens shift/keystone.
The Geobox also does edge blending, so it could be used for surround vision as well I think.