There’s been a lot of hype recently about “3D displays.” Unfortunately, that’s all it is –– hype. This is because we are a long, long way from 3D display of anything but artificially generated materials.

A 3D display actually produces a 3D representation; that is, if you change your angle of view, what you see changes accordingly. Look at the display from the side, and you see the scene from the side. Likewise, if the display is turned 180 degrees, you’d be looking at the back of the scene being displayed.

Stereo displays provide a fixed perspective generated by providing two single-angle images of a scene that are designed to replicate the angles your eyes would achieve from the (single, unchangeable) desired vantage point. Changing your angle of observation will not reveal other portions of the scene in any way, nor will moving the display.
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