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How does the 3D on new3DS works?

BDGAME

Member
It's something that I really want to know.

In the actual 3DS, the 3D is made with parallax screen, that send a different image for each eye

3dsdiagram1.jpg


That way, you can't move the machine a lot or you loose the 3D effect.

But in n3DS, they promise a 3D that you never lost it, don't matter from what angle you see.

new%2B3ds%2B4.png


What kind of technology they can use to obtain such effect? Did anyone know any of that?
 
You can see something new near that camera on the inside. I believe it helps to focus and track you face and then adapt the 3D effect to your position. (there's probably someone more tech savvy here to explain it with the right terms :p)
 
It's definitely the same kind of technology, except it uses headtracking (with the camera) to make sure you always get a clear picture no matter the angle. I doubt Nintendo went and changed the technology behind 3D.

No doubt we'll learn more about that in an Iwata Asks, provided we do get one.
 
They showed in the reveal video that the camera uses face-tracking to know where you're looking from, I assume it then adjusts the parallax barrier accordingly.
 
It shoots lasers into your eyes
BwOiOgtCIAA7y2J.jpg

I think Iwata mentioned that it uses the camera to track your eyes and adjusts itself on the fly
 
Gyroscope + camera = some sort of headtracking in order to "repositioning" the two different images on the 3D screen for the new "point of view". It's smart, I'm curious to try it out.
 
I have no idea. Sounds like science fiction to me. How can you even "move" the pixels in the paralax screen so that they face in a specific diretion?
 
The parallax barrier is simply another layer of LCD and can be dynamically adjusted. It's just a matter of using the gyro sensor and/or camera to detect the viewing angle and adjust the parallax barrier and rendered graphics layer accordingly.


I have no idea. Sounds like science fiction to me. How can you even "move" the pixels in the paralax screen so that they face in a specific diretion?
The pixels don't "move". Different pixels on the parallax barrier layer are lit and unlit as the angle is changed.

You can see something new near that camera on the inside. I believe it helps to focus and track you face and then adapt the 3D effect to your position. (there's probably someone more tech savvy here to explain it with the right terms :p)
This new component is most likely a light sensor. The new screens adjust brightness based on ambient light levels.
 
If it's only camera tracking, it will not work well in the dark or in a quick game, like face shooting. Or it can?
 
The parallax barrier is simply another layer of LCD and can be dynamically adjusted. It's just a matter of using the gyro sensor and/or camera to detect the viewing angle and adjust the parallax barrier accordingly.

On the current 3DS the paralax barrier is static and is either on or off. On the new 3DS they must have a parallax barrier that can be adjusted.
 
If it's only camera tracking, it will not work well in the dark or in a quick game, like face shooting. Or it can?

If it's in the dark, your face will be lit by the screen, so it shouldn't have any problem picking your face up.

It's not like the console needs to recognise who you are, so I think it just needs to detect something which shape is close to a human head... I guess?
 
If it's only camera tracking, it will not work well in the dark or in a quick game, like face shooting. Or it can?

You're almost certainly right. I also imagine that this only helps prevent loss of 3D from moving left or right, but you'll still lose the effect if you tilt your head.
 
And we all know how good the 3DS was at tracking those facial features in Poke-amie.

To be fair, the new 3D tracking is a big part of the reason for the processor upgrade, so it should work a lot better than previous head-tracking implementations.
 
If it's in the dark, your face will be lit by the screen, so it shouldn't have any problem picking your face up.

It's not like the console needs to recognise who you are, so I think it just needs to detect something which shape is close to a human head... I guess?

True. What matter is it know where ours eyes are.

And we all know how good the 3DS was at tracking those facial features in Poke-amie.

I never played that game, but it don't matter. The n3DS is a new technology and we don't know if the face tracking is the same or if a better future of that new model.
 
Facial detection is pretty much a trivial problem with the Viola-Jones method. The issue is the environment you're detecting stuff in, which can have all manner of noise. It might also be the reason for the increased CPU power, if they need face tracking for the 3D.
 
What if 2 kids/people are looking at one 3DS side by side as one plays?

I'm curious as to if it freaks out, or if it actually recognizes the individual actually playing it.
 
Eyeball tracking. Detects where your head is in relation to it, adjusts the paralax to it so you're always in the "sweet spot". It doesn't actually expand the sweet spot, just moves where it can be.

I'm also curious what 2 people watching it will do.
 
Was wondering this too. And I guess it is what many people suggested they do when the original came out.

Curios to try it too.
 
The thing about eyeballs is they reflect light pretty well. I doubt low-light situations will be a problem for the tracking.
 
They don't need to track eyeballs, only their positions, it's assumed that the eyeballs will always be looking at some part of the screen, it's the position of the head that matters (which can be detected through the position of the eyes).
 
What if 2 kids/people are looking at one 3DS side by side as one plays?

I'm curious as to if it freaks out, or if it actually recognizes the individual actually playing it.

It doens't use only the camera, but the gyro too (that's the reason why I think it should work also in dark environment), probably setting the "starting reset position" and thaen re-adjusting the angle if you move it.
 
It sounds a bit too good to be true to me. I hope that it will be responsive enough, the big problem with the 3D as it works now on the current 3DS models is that whenever you move you lose the 3D effect, if it takes a second or more for the camera to adjust, it will be just as annoying as the old thing.

If this new 3D screens delivers, I will buy a new 3DS ASAP. I really like the 3D effect, but with the current tech it's kind of annoying, especially when you're playing on a train or a car, which is where handheld consoles should shine.
 
I wonder how FAST it'll be at adjusting the screen. And what happens if the tracking loses you for whatever reason? Does it reset ti the o/g's default sweet spot? Hope it doesn't become too fiddley.
 
Doesn't the Amazon phone have the same thing?

Not really. The Amazon phone uses headtracking to change the rendered image on the screen to give the impression of parallax (kinda like those homebrewed experiments people cooked up using wiimotes, but without the need to mount crap on your head).

It's still a single flat image rather than the stereoscopic image you get on the 3ds, though.
 
Definitely one of the things I'm most curious to try on the n3ds. Hope it works as advertised since I really love the 3d on the current 3ds and having an improved version of that would be awesome.
 
I understand what you mean and also hope that it is responsive in terms of milliseconds. Things are pretty much okay on the original 3DS, but the XL is so sensitive that even the slight movements from pressing the buttons normally often make the screen "flicker". I'm expecting it to be slower than this, but if it can at least allow games with gyro features to be used more easily in 3D mode, then I'll be satisfied.
 
I understand it adjusts the parallax barrier, but how? I don't think that the barrier or the screen behind it move physically with little motors or something. Seems more likely that there is a fine mesh of individual blinds that turn on and off, but I don't see how that would create the smooth transition shown in the video. Curious to hear more.
 
I think it uses some combination of face/eye tracking with the camera and the gyro sensor. Either way, I hope it is really good because I like using the 3D but the small sweetspot makes me never use it anyways on the OG 3DS
 
Can eye tracking be done with IR? I thought our eyes produce a distinct reflection of IR when viewed by an ir camera... That would work in the dark if it can be done.
 
I understand it adjusts the parallax barrier, but how? I don't think that the barrier or the screen behind it move physically with little motors or something. Seems more likely that there is a fine mesh of individual blinds that turn on and off, but I don't see how that would create the smooth transition shown in the video. Curious to hear more.

I'm wondering about this too. A physically movable barrier would be ideal, as it could smoothly move the sweet spot to follow your eyes but I'm not sure how feasible that is, even if the necessary range of movement is very small (probably the width of two pixels). A "flippable" barrier (where it can alternate which columns are on and off) is easier to implement, but I imagine that would just create multiple "virtual sweet spots" and you would still see the image go blurry for a moment until your eyes enter the next one.
 
Can eye tracking be done with IR? I thought our eyes produce a distinct reflection of IR when viewed by an ir camera... That would work in the dark if it can be done.

Yeah, that makes sense.

We really need a special Iwata Asks for the N3DS. Probably is, Nintendo won't announce any western release before 2015, so it'll be a while until the translated version is online.
 
I don't think it's eye tracking. Too complicated and unresponsive.

There was a top of the line Toshiba tv that made glassless 3d from multiple angles by use of multifaceted pixels instead of flat ones. I think of something like this, more refined, even cheaper now and easy to do on a small screen.
 
How much of the additional hardware power will the constant(i guess) eye tracking(or whatever it is) consume?
 
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