Performance-based Animation

• Record the animation from live action

  • simplest method - rotoscope (trace) over video of real motions

• Real time input devices

  • electronic puppeteering

• Motion capture

  • track motion of reference points
    • body or face
    • magnetic
    • optical
    • exoskeletons
  • convert to joint angles (not so straightforward)
  • use these angles to drive an articulated 3-D model
  • These motion paths can be warped

• New industry: CG cartoons

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