Motion Capture
Recording actors' movements to animate digital characters with realistic human motion.
Definition
Motion capture (mocap) records actors' movements using sensors and cameras, translating performances into data that animates digital characters. This technology enables human nuance in computer-generated characters, from facial expressions to full-body movement.
Performance capture—an evolution of basic motion capture—records facial expressions and emotional performances alongside physical movement.
Why It Matters
Motion capture has become essential for creating believable digital characters in blockbuster entertainment. The technology bridges the gap between human performance and computer animation.
Understanding mocap capabilities and limitations helps content creators make informed decisions about production approaches.
Examples in Practice
Andy Serkis pioneered modern performance capture as Gollum in "The Lord of the Rings" and Caesar in "Planet of the Apes." "Avatar" used extensive facial capture to bring alien characters to life. Video games rely heavily on mocap for realistic character animation.
The technology continues advancing, with real-time capture enabling live performance applications.