Electromagnetic tracking: Difference between revisions
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{{see also|Terms|Technical Terms}} | |||
{{see also|Tracking}} | |||
[[Electromagnetic tracking]] ('''EMT''') is a [[Pose]]-estimation technology widely used in [[virtual reality]] (VR), [[augmented reality]] (AR), medical navigation, and human–[[robotics|robot–computer interaction]]. | [[Electromagnetic tracking]] ('''EMT''') is a [[Pose]]-estimation technology widely used in [[virtual reality]] (VR), [[augmented reality]] (AR), medical navigation, and human–[[robotics|robot–computer interaction]]. | ||
Unlike camera-based [[optical tracking]] or pure [[inertial tracking]], EMT determines the ''six-degree-of-freedom'' ([[6DOF]]) position and orientation of miniature sensor coils without requiring line-of-sight. A stationary [[field generator]] produces a precisely controlled magnetic field. Tri-axial receiver coils measure that field, and the system solves for each sensor’s pose every frame. Because each frame is computed independently, EMT suffers '''no cumulative drift''', while latencies are typically only a few milliseconds.<ref>Yaniv Z., Wilson E., Lindisch D., Cleary K. “Electromagnetic tracking in the clinical environment.” ''Medical Physics'' 36 (3): 876-892 (2009). doi:10.1118/1.3075829.</ref> | Unlike camera-based [[optical tracking]] or pure [[inertial tracking]], EMT determines the ''six-degree-of-freedom'' ([[6DOF]]) position and orientation of miniature sensor coils without requiring line-of-sight. A stationary [[field generator]] produces a precisely controlled magnetic field. Tri-axial receiver coils measure that field, and the system solves for each sensor’s pose every frame. Because each frame is computed independently, EMT suffers '''no cumulative drift''', while latencies are typically only a few milliseconds.<ref>Yaniv Z., Wilson E., Lindisch D., Cleary K. “Electromagnetic tracking in the clinical environment.” ''Medical Physics'' 36 (3): 876-892 (2009). doi:10.1118/1.3075829.</ref> | ||