computer-generated imagery - Computer Definition
The images and animations created with computer software for movies and video games, as well as TV and online commercials. The myriad special effects in today's movies, which mix real actors with aliens, are mostly generated in the computer. There is no limit to the fantasy world that can be created with computer-generated imagery (CGI) techniques. To learn the basics of computer images, see graphics. See 3D graphics and 3D visualization.