What is cgi

Last updated: April 1, 2026

Quick Answer: CGI stands for Computer-Generated Imagery, the creation of visual content and special effects using computer graphics technology. CGI is widely used in films, television, video games, and digital media.

Key Facts

Understanding CGI

Computer-Generated Imagery (CGI) refers to visual content created or enhanced using computer graphics technology. This includes everything from simple 2D animations to complex 3D photorealistic environments and characters. CGI has become indispensable in modern entertainment and media production.

Types of CGI

2D CGI involves creating flat digital images and animations, commonly used in web design, cartoons, and advertising. 3D CGI creates three-dimensional models and environments, enabling more realistic and immersive visuals. Motion capture (mocap) uses real actor movements to animate digital characters, blending performance with digital creation.

Film and Entertainment

CGI revolutionized the film industry starting in the 1990s. Blockbuster films like Jurassic Park, The Matrix, and Avatar pushed CGI boundaries, creating lifelike dinosaurs, creatures, and entire fantasy worlds. Today, most major films use CGI for action sequences, visual effects, disaster scenes, and creatures that would be impossible or dangerous to film practically.

Production Process

Creating CGI involves multiple stages. Artists first create 3D models of objects, characters, or environments. Texturing adds surface details like color and material properties. Lighting artists set up digital lights to create mood and realism. Finally, rendering converts all these elements into final images using specialized software. A single frame of CGI can take hours or days to render.

Applications Beyond Film

CGI extends far beyond movies and television. Video games rely entirely on real-time 3D graphics. Architectural visualization uses CGI to preview building designs. Medical imaging uses CGI for visualization. Advertising uses CGI to create eye-catching commercials. Virtual reality and augmented reality applications depend on CGI technology.

Related Questions

What is the difference between CGI and animation?

CGI is the technology that creates digital visuals, while animation is the technique of creating motion. CGI can be used to create animations, but not all CGI is animated.

What software is used for CGI?

Common CGI software includes Autodesk Maya, Blender, Cinema 4D, Houdini, and RenderMan for rendering. Each tool serves different purposes in the CGI production pipeline.

How much does CGI cost in films?

CGI costs vary widely depending on complexity. A single visual effect scene can cost $100,000 to millions of dollars, making CGI one of the largest expenses in modern blockbuster films.

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Sources

  1. Wikipedia - Computer-generated Imagery CC-BY-SA-4.0
  2. FXGuide - Visual Effects Industry Publication proprietary