I filmbransjen gjelder dette Computer-generated imagery, mens i databransjen er Common Gateway Interface en protokoll for å koble ekstern programvare med en tjenermaskin, vanligvis kalt en nett-tjener. Dette lar tjeneren sende forespørsler fra en klients nettleser til det eksterne programmet. Nett-tjeneren kan deretter sende svaret fra programmet til nettleseren.

CGI is the application of the field of computer graphics or, more specifically, 3D computer graphics to special effects in films, television programs, commercials, simulators and simulation generally, and printed media. Video games usually use real-time computer graphics (rarely referred to as CGI), but may also include pre-rendered "cut scenes" and intro movies that would be typical CGI applications. These are referred to as FMV (Full motion video).

CGI is used for visual effects because computer generated effects are more controllable than other more physically based processes, such as constructing miniatures for effects shots or hiring extras for crowd scenes, and because it allows the creation of images that would not be feasible using any other technology. It can also allow a single artist to produce content without the use of actors, expensive set pieces, or props.

Computer software such as LightWave 3D Maya and Softimage XSI are used to make computer-generated imagery for movies, etc. Recent accessibility of CGI software and increased computer speeds has allowed individual artists and small companies to produce professional grade films, games, and fine art from their home computers. This has brought about an Internet subculture with its own set of global celebrities, clichés, and technical vocabulary.

 

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