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Head motion axis assignment

  • The translational components may be given in terms of movements along x-, y-, and z-axes of the head, which form a right-handed coordinate system for the head.

  • Rotations about around the x-, y-, and z -axes are commonly referred to as roll, pitch, and yaw, respectively

  • The positive direction of head rotation follows a right-hand rule—that is, if the fingers of the right hand are curled in the direction of the arrows, the thumb points in the positive direction of the axis.

Axis

Rotation

Pos. Direction

Neg. Direction

Axis

Rotation

Pos. Direction

Neg. Direction

x

Roll

tilt to the right

tilt to the left

y

Pitch

nose down

nose up

z

Yaw

turn left

turn right

Direction are indicated relative to the heads viewing angle.

Links

Gutenbergstrasse 39 * 72555 Metzingen

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