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Stereoscopic (3-D) Movies


Stereoscopy (also called stereoscopic or 3-D imaging) is any technique capable of recreating three-dimensional visual information or creating the illusion of depth in an image. The basic requirement is to recreate offset images that are presented separately to the left and right eye. Both of these 2-D offset images are then combined in the brain to give the perception of 3-D depth.

Three strategies have been used to accomplish this: have the viewer wear eyeglasses to combine separate images from two offset sources, have the viewer wear eyeglasses to filter offset images from a single source separated to each eye, or have the light source split the images directionally into the viewer's eyes (no glasses required).

The level of virtuality exhibited by stereoscopic (3-D) movies, as well as their overall perceived visual reliability, could be considered as slightly superior to plain animations. The ability to stimulate in the viewer the perception of real depth implies, that virtual walks or animations through long-gone buildings, ancient cities or environments that no longer exist will be more realistic and enjoyable than ever.