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projection mapping
Projection mapping, also known as video mapping and spatial augmented reality, is a projection technology used to turn objects, often irregularly shaped, into a display surface for video projection. These objects may be complex industrial landscapes, such as buildings, small indoor objects or theatrical stages. By using specialized software, a two- or three-dimensional object is spatially mapped on the virtual program which mimics the real environment it is to be projected on. The software can interact with a projector to fit any desired image onto the surface of that object.〔(【引用サイトリンク】url=http://projection-mapping.org/whatis/ )〕 This technique is used by artists and advertisers alike who can add extra dimensions, optical illusions, and notions of movement onto previously static objects. The video is commonly combined with, or triggered by, audio to create an audio-visual narrative.
==History==
Although the term ''projection mapping'' is relatively new, the technique dates back to the late 1960s, where it was referred to as video mapping, spacial augmented reality, or shader lamps.〔(【引用サイトリンク】url=http://projection-mapping.org/index.php/intro/160-the-history-of-projection-mapping )〕 One of the first public displays of projections onto 3D objects was debuted in 1969, when Disneyland opened their Haunted Mansion ride. The ride used fake disembodied heads as objects which had 16mm film projected onto them to make them appear animated. The next record of projection mapping is from 1980, when installation artist Michael Naimark filmed people interacting with objects in a living room and then projected it in the room, creating illusions as if the people interacting with the objects were really there. The first time the concept of projection mapping was investigated academically was at the University of North Carolina at Chapel Hill in the late 1990s, where scholars worked on a project called ''Office of the Future'' to connect offices from different locations by projecting people into the office space as if they were really there. By 2001, more artists began using projection mapping in artwork, and groups such as Microsoft began experimenting with it as a means of technological advancement.
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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