Motion Capture CS294-7 Jacqueline Takeshita Mindy Lue.

Motion CaptureMotion CaptureCS294-7CS294-7

Jacqueline TakeshitaJacqueline Takeshita

Mindy LueMindy Lue

What is motion capture?What is motion capture?

Technique that digitally records Technique that digitally records movements using markers at jointsmovements using markers at joints

Software records positions, angles, Software records positions, angles, velocities, accelerations, and impulsesvelocities, accelerations, and impulses

Also known as motion trackingAlso known as motion tracking

Where is it used?Where is it used?

Education – how the body movesEducation – how the body movesTraining – suggest ways to improve Training – suggest ways to improve

performance performance Sports - simulationsSports - simulationsComputer AnimationComputer AnimationVideo GamesVideo Games

How it WorksHow it Works

Mechanical – performer wears sensorsMechanical – performer wears sensorsOptical – performer wears reflective dots Optical – performer wears reflective dots

followed by several camerasfollowed by several camerasElectromagnetic – performer wears an Electromagnetic – performer wears an

array of magnetic receivers which track array of magnetic receivers which track location with respect to transmitterlocation with respect to transmitter

AdvantagesAdvantages

Saves timeSaves timeCreates natural realistic movementsCreates natural realistic movementsActor can play multiple roles in a single Actor can play multiple roles in a single

filmfilmAllows for rotating effects and multiple Allows for rotating effects and multiple

anglesanglesCharacters can be blended to digital Characters can be blended to digital

environmentsenvironments

DisadvantagesDisadvantages

Limited to movements that are Limited to movements that are anatomically possibleanatomically possible

Specific hardware and programs needed Specific hardware and programs needed to obtain and process datato obtain and process data

Technology upgraded quickly – versions Technology upgraded quickly – versions become obsolete every few yearsbecome obsolete every few years

Real life performance may not translate Real life performance may not translate onto the computer modelonto the computer model

GollumGollum

The Polar ExpressThe Polar Express

Happy FeetHappy Feet

Monster HouseMonster House