Stereoscopy

Stereoscopy (also known as stereoscopic imaging) is a technique used to create the illusion of depth in an image by means of stereopsis for binocular vision. The word stereoscopy derives from Greek στερεός (stereos), meaning 'firm, solid', and σκοπέω (skopeō), meaning 'to look, to see'.

History

The concept of stereoscopy can be traced back to the 1830s. Sir Charles Wheatstone was one of the pioneers in this field, and he developed the stereoscope, a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye views of the same scene, as a single three-dimensional image.

Principles

Stereoscopy is based on the principle of two slightly offset pictures being separately taken into the eyes. The brain then combines these two images into a single image, with the difference in perspective between the two images providing depth perception.

Techniques

There are several techniques for creating stereoscopic images, including:

• Anaglyph 3D: This technique uses filters of two different colors, typically red and cyan.
• Polarized 3D: This technique uses polarization glasses to create the illusion of three-dimensional images by restricting the light that reaches each eye.
• Autostereoscopy: This technique allows for a stereoscopic 3D effect without the use of special headgear or glasses on the part of the viewer.

Applications

Stereoscopy has a wide range of applications, including in cinema, television, video games, architecture, and medical imaging.

See also

• 3D film
• 3D television
• Stereoscope
• Stereoscopic video game

References

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External links

• Stereoscopy.com - The World of 3D-Imaging! (since 1994)

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  Pocket stereoscope
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  I-construction stereoscopy animation
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  Charles Street Mall, Boston Common, by Soule, John P.
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  787 Orange Street, Addison R. Tinsley house, circa 1890s
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  772 College Street, (Johnston Street then) Fleming D. Tinsley house, razed 1963, circa 1870s
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  August Fuhrmann-Kaiserpanorama 1880
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  Company of ladies watching stereoscopic photographs by Jacob Spoel
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  Charles Wheatstone mirror stereoscope XIXc
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  Visore stereoscopico portatile Museo scienza e tecnologia Milano
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  Niagara Falls Suspension Bridge by Saul Davis
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  Stereoscopic postcard of the Geneva synagogue
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  Early bird stereograph