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stereoscopic imaging or 3-D (three-dimensional)
imaging is any technique capable of recording three-dimensional
visual information or creating the illusion of depth in an
image. created by presenting a slightly different image to each
Traditional stereoscopic photography consists of creating a 3-D
illusion starting from a pair of 2-D images. The easiest way to
create depth perception in the brain is to provide the eyes of
the viewer with two different images, representing two
perspectives of the same object, with a minor deviation similar
to the perspectives that both eyes naturally receive in
Stereoscope was used by Allied
photo interpreters to analyze images shot from aerial photo
reconnaissance platforms.In the 1940s, a modified and
miniaturized variation of this technology was introduced as the
View-Master. Pairs of stereo views are printed on translucent
film which is then mounted around the edge of a cardboard disk
and a series of seven views can thus be seen on each card when
it was inserted into the View-Master viewer.
Another important development in the late 1940s was the
introduction of the Stereo Realist camera and viewer system.
Using color slide film, this equipment made stereo photography
available to the masses and caused a surge in its popularity.
The Stereo Realist and competing products can still be found (in
estate sales and elsewhere) and utilized today.