Tracking: Difference between revisions
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{{see also|Positional tracking}} | {{see also|Positional tracking}} | ||
[[Tracking]] allows the [[HMD]] | [[Tracking]] allows the [[VR]] or [[AR]] system to know where your head ([[HMD]]), hands and other body parts ([[Input Device]]s) are looking and moving. Tracking is important to accurately render the virtual world to match your physical positions and movements. | ||
Tracking can either be 3DOF (rotation only) or 6DOF (position and rotation). Early VR tracking technology in the 1990s used magnetic tracking systems that used either AC magnetics or DC magnetics depending on the provider. | |||
The [[Magic Leap 1]] uses 6DOF magnetic tracking for its controller, but it is poor quality. | |||
==Rotational Tracking== | ==Rotational Tracking== | ||
[[Rotational tracking]] tracks an object's movement in all 3 rotational directions: pitch, yaw, and roll. Rotational tracking is usually performed by [[IMUs]] such as . | [[Rotational tracking]] tracks an object's movement in all 3 rotational directions: pitch, yaw, and roll. Rotational tracking is usually performed by [[IMUs]] such as [[accelerometer]]s, [[gyroscope]]s and [[magnetometer]]s. | ||
==Positional Tracking== | ==Positional Tracking== | ||
[[Positional tracking]] tracks an object's movement in all 3 translational directions: forward/back, up/down, left/right. Positional tracking is usually more difficult than rotational tracking and is accomplished through different [[Positional tracking#Types|Types]] and [[Positional tracking#Systems|Systems]]. | |||
==Tracking Systems== | |||
'''[[Lighthouse]]''' - laser-based system developed by [[Valve]] for [[SteamVR]]. | |||
'''[[Constellation]]''' - optical-based system developed by [[Oculus VR]] for [[Oculus Rift (Platform)]]. | |||
'''[[WorldSense]]''' - developed by [[Google]] that uses [[markerless inside-out tracking]]. | |||
==Comparison of tracking systems== | |||
{{see also|Comparison of tracking systems}} | |||
{{:Comparison of tracking systems}} | |||
[[Category:Terms]] | [[Category:Terms]] [[Category:Technical Terms]] | ||