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Six degrees of freedom refers to the freedom of movement of a rigid body in three-dimensional space. Specifically, the body is free to change position as forward/backward , up/down , left/right translation in three perpendicular axes, combined with changes in orientation through rotation about three perpendicular axes, often termed yaw , pitch , and roll. Three degrees of freedom , a term often used in the context of virtual reality, refers to tracking of rotational motion only: pitch, yaw, and roll.
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