[ PROJECTION ] posted July 10, 2008 "Projection" is the way to map a three-dimensional coordinate onto a two-dimensional plane, which is one of the key techniques to view a real 3D image on a 2D presentation panel such as the PC screen. Now let's take a brief look at several projection methods commonly used in the field of cartography, crystallography, geology, astronomy, architectonic, optics and photography including panoramic image generation.We hope this helps understand how the concept of projection is relevant to shooting, stitching and showing panoramic or omini-directional photographs and motion pictures. Place your mouse pointer over the following picture to show a frame/grid view of each projection. Select projection ---> Equirectangle (horizontal view) Equirectangle (vertical top view) Equirectangle (vertical bottom view) Rectilinear [i.e. rectlinear, normal or perspective ] Bipolar [i.e. hyperbolic or full-stereographic] (horizontal view) Bipolar [i.e. hyperbolic or full-stereographic] (vertical top view) Bipolar [i.e. hyperbolic or full-stereographic] (vertical bottom view) Polar [i.e. full-polar or full-equidistance] (horizontal) Polar [i.e. full-polar or full-equidistance] (vertical top view) Polar [i.e. full-polar or full-equidistance] (vertical bottom view) Orthogonal [i.e. orthographic or globe] Equisolidangle Equidistance [i.e. half-polar] Stereographic [i.e. half-bipolar or half-hyperbolic]
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