'''3D computer graphics''', sometimes called [[Computer-generated imagery|CGI]], '''3D-CGI''' or '''three-dimensional [[Computer-generated imagery|computer graphics]]''', are graphics that use a [[three-dimensional]] representation of geometric data (often [[Cartesian coordinate system#Cartesian coordinates in three dimensions|Cartesian]]) stored in the computer for the purposes of performing calculations and rendering [[digital image]]s, usually [[2D image]]s but sometimes [[3D image]]s. The resulting images may be stored for viewing later (possibly as an [[Computer animation|animation]]) or displayed in [[Real-time computer graphics|real time]].<ref name="Foley 2013">{{cite book |last=Foley |first=James D. |title=Computer Graphics: Principles and Practice |last2=van Dam |first2=Andries |last3=Feiner |first3=Steven K. |last4=Hughes |first4=John F. |publisher=Addison-Wesley |year=2013 |isbn=978-0321399526 |edition=3rd}}</ref>
3D computer graphics, contrary to what the name suggests, are most often displayed on two-dimensional displays. Unlike [[3D film]] and similar techniques, the result is two-dimensional, without visual [[depth perception|depth]]. More often, 3D graphics are being displayed on [[3D display]]s, like in [[virtual reality]] systems.
