Overview
Humans have two eyes which are capturing light from slightly different positions and therefore produce slightly different images. The difference in observed images is unconsciously processed by the human brain and results in sensation of depth, or 3D sensation.
Stereoscopic 3D refers to a technique for creating or enhancing the illusion of depth in an image by presenting two offset images separately to the left and right eye of the viewer. Both of these 2D offset images are then combined in the brain to give the perception of 3D depth.
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