3D Projection Mapping is any method of mapping three-dimensional points to a two-dimensional plane. As most current methods for displaying graphical data are based on planar (pixel information from several bitplanes) two-dimensional media, the use of this type of projection is widespread, especially in computer graphics, engineering and drafting.
Graphical projection is a protocol, used in technical drawing, by which an image of a three-dimensional object is projected onto a planar surface without the aid of numerical calculation.
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3D mapping applications nowadays are gaining traction and are being adopted by the end users on a large scale. 3D projection mapping is one of the emerging technologies that help in mapping the 3D points on a 3D plane.Another application of 3D mapping is mapping and navigation, which is specially designed for mobile devices.3D projectors are very purposeful and demonstrative as to give effect of real life. It can be seen in movies when impression is made as a three dimensional objects are seen while in actual they are made on two dimensional surfaces.