photo:stereographic_projection
stereographic projection in fisheye lenses
introduction
stereographic projection is a way of picturing a 3D sphere as a 2D plane to maintain angles, and this doesn't compress marginal objects as much.
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traditional fisheye lenses use an equal-area projection in which areas close to the edge retain their shape, and straight lines are less curved, these images can be automatically converted to stereographic projection using tools such as Panotools
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photo/stereographic_projection.txt · Last modified: 2015/11/01 23:23 by gary1