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Head Tracking and Virtual Reality

by Benjamin Nielsen. Head Tracking and Virtual Reality. Head Tracking and Virtual Reality. Components of Virtual Reality Methods of Head Tracking Applications Conclusion. Components of Virtual Reality. Aims to remove differences between “real reality” and virtual reality

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Head Tracking and Virtual Reality

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  1. by Benjamin Nielsen Head Tracking and Virtual Reality

  2. Head Tracking and Virtual Reality • Components of Virtual Reality • Methods of Head Tracking • Applications • Conclusion

  3. Components of Virtual Reality • Aims to remove differences between “real reality” and virtual reality • Left eye/Right eye differentiation • “Authentic” interface devices • Adapts to user's head movements

  4. Left eye/Right eye problem • We get depth perception from having two eyes, each producing their own image • Computer screens produce one image for both eyes • Red-Blue glasses

  5. Head Tracking • Changes the position of the virtual camera based on the position of the user's head • Allows you to look around virtual corners by moving your physical head • Gives a greater sense of depth

  6. How head tracking works • Accelerometer-based head tracking • Computes head position from accelerations • Low computational overhead • Problems include calibration and accumulated error • Camera-based head tracking • Computes head position from recognizable points • Very precise • More computationally intensive • Some participants reported motion sickness

  7. Tracking points • Head tracking camera needs points to recognize • Infrared LEDs are popular for these points, for several reasons: • Less chance of a false positive in the background • WiiMote's IR camera can automatically track multiple points

  8. Applications • Training simulations • Used in a study on training industrial welders • Military training simulators • Gaming • Pretty much any 3d game

  9. Conclusion • Head tracking provides one component of virtual reality • Current solutions aren't perfect • Points may be hidden • Too few points used • Solutions will improve with time

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