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Computer-generated imagery (CGI) is a specific-technology or application of computer graphics for creating or improving images in art, printed media, simulators, videos and video games. These images are either static (i.e. still images ) or dynamic (i.e. moving images).
It is also referred to as CGI (Computer-generated imagery or computer-generated imaging), especially when used in films. Virtual entities may contain and be controlled by assorted attributes, such as transform values (location, orientation, and scale) stored in an object's transformation matrix. Animation is the change of an attribute over time.
Computer-generated usually refers to a sound or visual that has been created in whole or in part with the aid of computer software or computer hardware. Computer-generated may refer to: Computer animation; Computer art; Computer graphics; Computer-generated holography; Computer-generated imagery (CGI) Computer-generated music
Computer image may refer to: Computer-generated imagery , still or moving imagery created by or with help of a computer. System image , a serialized (backup) copy of the entire state of a computer system.
Computer-generated imagery, computer-graphic effects in films, television programs, and other visual media; Computer Graphics Interface, the low-level interface between the Graphical Kernel System and hardware; Common Gateway Interface, a standard for dynamic generation of web pages by a web server
3D computer graphics, sometimes called CGI, 3D-CGI or three-dimensional computer graphics, are graphics that use a three-dimensional representation of geometric data (often Cartesian) that is stored in the computer for the purposes of performing calculations and rendering digital images, usually 2D images but sometimes 3D images.
An example of computer animation which is produced from the "motion capture" techniqueComputer animation is the process used for digitally generating moving images. The more general term computer-generated imagery (CGI) encompasses both still images and moving images, while computer animation only refers to moving images.
The 1972 short film A Computer Animated Hand by Edwin Catmull and Fred Parke was the first time that computer-generated imagery was used in film to simulate moving human appearance. The film featured a computer simulated hand and face (watch film here). The 1976 film Futureworld reused parts of A Computer Animated Hand on the big screen.