Stereo imagery is a pair of images taken from different perspectives of the same target or area, similar to human (binocular) vision, which allows for perception and potential measurement of three-dimensional depth and relationship using parallax. It can be used to create data, such as extracting a digital elevation model from a stereo pair, or to visualize data in 3D using several methods, such as red/blue anaglyphs.

See the Wikipedia article on Stereoscopy for more information.

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