Stereoscopy
technique for creating or enhancing the illusion of depth in an image
Stereoscopy, also called stereoscopics or stereo imaging, refers to making images appear three-dimensional. The most popular kind of stereoscopy is two-view stereoscopy, which creates partial depth perception in an image from a set of two two-dimensional images by using binocular disparity. The word stereoscopy derives from Ancient Greek στερεός (stereós) 'firm, solid' and σκοπέω (skopéō) 'to look, to see'. Any stereoscopic image is called a stereogram. Originally, stereogram referred to a pair of two-dimensional images that could be viewed using a stereoscope.
Most stereoscopic methods present a pair of two-dimensional images to the viewer. The left image is presented to the left eye and the right image is presented to the right eye. When viewed, the human brain perceives the images as a single 3D view, giving the viewer the perception of 3D depth. However, the 3D effect lacks proper focal depth, which gives rise to the vergence-accommodation conflict.
Stereoscopy is distinguished from other types of 3D displays that display an image in three full dimensions, allowing the observer to increase information about the 3-dimensional objects being displayed by head and eye movements.
This brief starts where responsible research should: with the source description of “Stereoscopy” as technique for creating or enhancing the illusion of depth in an image. Everything that follows is an evidence route, not borrowed authority.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 10, 2026. The linked authority identifier is Q35158. The Library of Congress control number is sh2001000478. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “Stereoscopy” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.