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Maybe we are a long way from glasses free 3D tablets, but it looks like 3D on the iPad 2, using its front camera, is possible. Of course its just a convincing effect of 3D that is given. So how do they achieve glasses free 3D on a device that’s actually not built keeping that in mind? The technique is called head tracking and the front camera of iPad 2 senses where the user is looking at, thereby adjusting the perspective in order to give a 3D effect.

 

Head-Coupled Perspective on Mobile Devices. We track the head of the user with the front facing camera in order to create a glasses-free monocular 3D display. Such spatially-aware mobile display enables to improve the possibilities of interaction.
It does not use the accelerometers and relies only on the front camera. The demo with the targets has been inspired by the work of Johnny Lee with a Wii remote.

The user could then move their head left and right to look around a 3D object as shown in the example image above. Apple also suggests that it could also be applied to 2D objects like windows to provide some added depth to traditionally flat objects.

As of now, this application isn’t available for download. Although previously it has been said that Apple has been looking into 3D technology, which that company has patented for Mac desktops back in 2009. Nevertheless, it would be great is Apple introduces 3D technology in its products.

Video via Macstories:

Did you know: The fifth generation iPod touch is said to support glasses free 3D?

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