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3D stereo view
== History ==
In 1833, an English scientist Charles Wheatstone, discovered that because human eyes are not at exactly the same place, objects viewed through eyes are not the same, thus creating an illusion of depth. And five years later, according to what he discovered, he invented the stereoscope. Stereoscope is a binocular device through which a pair of monocular images was projected to both eyes in such a way that the optic axes converge at the same angle, which gave the impression of a solid 3D image. Since then, people started to have a concept of stereo view. However, Wheatstone's invention was impractical until Sir David Brewster, a Scottish physicist and experimenter of optics, discovered that a 3D effect could be observed in repeated patterns with small difference in 1844. Brewster used what he discovered in building the stereo camera. The stereo camera combined the refracting stereoscope with two separate cameras which were placed slightly apart. The monocular pictures through the cameras gave the resulting image a 3D effect.〔"The History of Stereo Photography." ''History of Stereo Photography''. The Turning Institute, 31 July 1996. Web. 14 Apr. 2015. <http://www.arts.rpi.edu/~ruiz/stereo_history/text/historystereog.html>.〕
In 1846, W Rollman invented 3D anaglyphs, which are two sets of superimposed identical line drawing(one in blue and the other in red), which when viewed through red and blue glasses, appeared to be three-dimensional. And then in 1891, Louis Ducas du Haron created the first printed anaglyphs-photographs consisting of two negatives(one in blue or green, the other in red) printed on the same sheet of paper to form a stereoscopic photograph.
In 1930s, inventor Edwin Land replaced the red and green filters in the du Haron's anaglyphs with two planes of polarised light.
In 1959, Dr. Bela Julesz, a psychologist researching on depth perception and pattern recognition, created random-dot stereoimages, which are pictures consisting of a unifrom, random distribution of dots.〔"H2g2 - 3D Stereograms - Edited Entry." H2g2 - 3D Stereograms - Edited Entry. 9 June 2004. Web. 14 Apr. 2015. .〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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