The creation of a Brownian surface may be achieved not only by adding noise as new nodes are created but by adding additional noise at multiple levels of the mesh. For instance, the algorithm may start with a large triangle, then recursively zoom in by dividing it into four smaller Sierpinski triangles, then interpolate the height of each point from its nearest neighbors. A simple way to generate fractal surfaces is to use an extension of the triangular mesh method, relying on the construction of some special case of a de Rham curve, e.g.
Not only do animated images form part of computer-generated imagery natural looking landscapes (such as fractal landscapes) are also generated via computer algorithms. The term virtual world refers to agent-based, interactive environments, which are now created with CGI.
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Availability of CGI software and increased computer speeds have allowed individual artists and small companies to produce professional-grade films, games, and fine art from their home computers. The evolution of CGI led to the emergence of virtual cinematography in the 1990s, where the vision of the simulated camera is not constrained by the laws of physics. The first music video to use CGI was Dire Straits' award-winning " Money for Nothing" (1985), whose success was instrumental in giving the process mainstream exposure. Other early films that incorporated CGI include Star Wars (1977), Tron (1982), The Last Starfighter (1984), Young Sherlock Holmes (1985) and Flight of the Navigator (1986).
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The first feature film to make use of CGI was the 1973 movie Westworld. The images may be dynamic or static, and may be two-dimensional (2D), although the term "CGI" is most commonly used to refer to the 3-D computer graphics used for creating characters, scenes and special effects in films and television, which is described as "CGI animation".
Computer-generated imagery ( CGI) is the application of computer graphics to create or contribute to images in art, printed media, video games, simulators, computer animation and VFX in films, television programs, shorts, commercials, and videos.
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