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- W1996356711 abstract "Display lag in simulation environments with helmet-mounted displays causes a loss of immersion that degrades the value of virtual/augmented reality training simulators. Simulators use predictive tracking to compensate for display lag, preparing display updates based on the anticipated head motion. This paper proposes a new method for predicting head orientation using a delta quaternion (DQ)-based extended Kalman filter (EKF) and compares the performance to a quaternion EKF. The proposed framework operates on the change in quaternion between consecutive data frames (the DQ), which avoids the heavy computational burden of the quaternion motion equation. Head velocity is estimated from the DQ by an EKF and then used to predict future head orientation. We have tested the new framework with captured head motion data and compared it with the computationally expensive quaternion filter. Experimental results indicate that the proposed DQ method provides the accuracy of the quaternion method without the heavy computational burden." @default.
- W1996356711 created "2016-06-24" @default.
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- W1996356711 date "2009-12-01" @default.
- W1996356711 modified "2023-09-25" @default.
- W1996356711 title "Head Orientation Prediction: Delta Quaternions Versus Quaternions" @default.
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- W1996356711 doi "https://doi.org/10.1109/tsmcb.2009.2016571" @default.
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