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Three-point lighting is a standard method used in visual media such as theatre, video, film, still photography, computer-generated imagery and 3D computer graphics. [1] By using three separate positions, the photographer can illuminate the shot's subject (such as a person) however desired, while also controlling (or eliminating) the shading and ...
Roger Penrose's solution of the illumination problem using elliptical arcs (blue) and straight line segments (green), with 3 positions of the single light source (red spot). The purple crosses are the foci of the larger arcs. Lit and unlit regions are shown in yellow and grey respectively.
However, Dudeney states that the problem is "as old as the hills...much older than electric lighting, or even gas". [3] Dudeney also published the same puzzle previously, in The Strand Magazine in 1913. [4] A competing claim of priority goes to Sam Loyd, who was quoted by his son in a posthumous biography as having published the problem in 1900 ...
Light poverty is the state or condition in which people or communities lack artificial or electric light after sunset. This originates from many social and economic reasons, including inability to afford efficient lighting. [1] Light poverty may also occur when a country's national grid has not electrified rural areas requiring light. [2]
A common artificial lighting strategy that creates an overall appearance similar to natural fill places the fill light on the lens axis so that it will appear to cast few if any shadows from the point of view of the camera, which allows the key light that overlaps it to create the illusion of 3D in a 2D photo with the same single-source ...
3-point_lighting.ogv (Ogg multiplexed audio/video file, Theora/Vorbis, length 36 s, 640 × 480 pixels, 219 kbps overall, file size: 958 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The Phong reflection model was developed by Bui Tuong Phong at the University of Utah, who published it in his 1975 Ph.D. dissertation. [1] [2] It was published in conjunction with a method for interpolating the calculation for each individual pixel that is rasterized from a polygonal surface model; the interpolation technique is known as Phong shading, even when it is used with a reflection ...
I'd suggest that Three-point lighting is a more commonly used term than 4-point lighting setup, and that 4-point lighting is a subset of it. Consequently, I recommend merging 4-point lighting setup into Three-point lighting. --Jeremy Butler 13:39, 17 February 2006 (UTC) I totally agree with Jeremy Butler. Oliver Bronson Done.