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Anamorphosis
Anamorphosis is a distorted projection or perspective requiring the viewer to use special devices or occupy a specific vantage point (or both) to reconstitute the image. The word "anamorphosis" is derived from the Greek prefix ''ana‑'', meaning back or again, and the word ''morphe'', meaning shape or form.
==Types of projection==
There are two main types of anamorphosis: ''perspective'' (oblique) and ''mirror'' (catoptric).
Examples of perspectival anamorphosis date to the early Renaissance (fifteenth century). Examples of mirror anamorphosis were first seen in the late Renaissance (sixteenth century).
With mirror anamorphosis, a conical or cylindrical mirror is placed on the drawing or painting to transform a flat distorted image into a three-dimensional picture that can be viewed from many angles. The deformed image is painted on a plane surface surrounding the mirror. By looking uniquely into the mirror, the image appears undeformed. This process of anamorphosis makes it possible to diffuse caricatures, erotic and scatological scenes and scenes of sorcery for a confidential public.
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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