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Curvilinear barrel distortion Curvilinear pincushion distortion. Curvilinear perspective, also five-point perspective, is a graphical projection used to draw 3D objects on 2D surfaces, for which (straight) lines on the 3D object are projected to curves on the 2D surface that are typically not straight (hence the qualifier "curvilinear" [citation needed]).
Kim in the middle of producing a drawing, 2014. Kim was famous for his detailed illustrations, ink and brush artistic style, and skill at drawing from memory. [2] [10] [14] He could complete his drawings entirely from his imagination, without the use of sketches, visual references, or other preparatory aids, and often used exotic forms of perspective, such as curvilinear perspective.
A fisheye lens is an ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image. [4] [5]: 145 Fisheye lenses achieve extremely wide angles of view, well beyond any rectilinear lens.
Furnas, George W. "Generalized fisheye views." in Human Factors in Computing Systems CHI ‘86 Conference Proceedings, 16-23. 1986. Furnas, George W., et al. "The vocabulary problem in human-system communication." Communications of the ACM 30.11 (1987): 964-971. Deerwester, Scott C., et al. "Indexing by latent semantic analysis."
Fisheye lenses, typical focal lengths are between 8 mm and 10 mm for circular images, and 15–16 mm for full-frame images. Up to 180° and beyond. Up to 180° and beyond. A circular fisheye lens (as opposed to a full-frame fisheye) is an example of a lens where the angle of coverage is less than the angle of view.
Bird's-eye views can be an aerial photograph, but also a drawing, and are often used in the making of blueprints, floor plans and maps. [ 1 ] Before crewed flight was common, the term "bird's eye" was used to distinguish views drawn from direct observation at high vantage locations (e.g. a mountain or tower), from those constructed from an ...
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Jon Gnagy (January 13, 1907 – March 7, 1981) was a self-taught artist most remembered for being America's original television art instructor, hosting You Are an Artist, which began on the NBC network and included analysis of paintings from the Museum of Modern Art, and his later syndicated Learn to Draw series.