Optical Capture | Magnetic Capture | Motion Base | Other Methods

CAREN Base

MAGNETIC CAPTURE

Magnetic systems use a centrally located transmitter and sensors that relay positionand orientation in a measured space to capture motion. The sensors are able to measure their spatial relationship to the transmitter because theyare immersed in an electromagnetic field .Optical motion capture systems offer higher accuracy at higher sampling speeds then Electro-Magneticsystems and give greater freedom to the performers. There are systems using AC fields and othersusing DC magnetic fields. Sensors, attached to various parts of the performer's body, are usually connected to the recording device via cables; however, some developments constructed systems that were untethered. Untethered systems require transmitters, batteries and connecting wires between sensors and transmitter.

The recording device that each sensor is connected to has an interface that can be synchronized so as to prevent a data skew. The resulting data stream consists of 3D positions and orientations for each receiver. This data is typically applied to an inverse kinematics system, to drive an animated skeleton. Magnetic system are affected by any sizable areas of metal in vicinity of the capture area

MOTEK Medical products are currently integrated with the following 3rd party hardware:

  • Polhemus Fastrak configurations.
  • Polhemus Ultratrak configurations.
  • Accension configurations.

Other motion capture systems. (compatible but not integrated yet)

  • Animazoo mechanical system
  • Xsens Inertial system.
  • Intersense range of systems.
  • Measurand shape based system.

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