Use of comparative sensor data to determine orientation of head relative to body

摘要

Methods and systems are described that involve a head-mountable display (HMD) or an associated device determining the orientation of a person's head relative to their body. To do so, example methods and systems may compare sensor data from the HMD to corresponding sensor data from a tracking device that is expected to move in a manner that follows the wearer's body, such a mobile phone that is located in the HMD wearer's pocket.

主权项

1. A computer-implemented method comprising:
detecting, by a computing device, sensor data that is indicative of an association between movement of a tracking device and body movement; in response to detecting the sensor data that is indicative of the association between movement of the tracking device and body movement:
determining a direction of the body movement that is associated with the movement of the tracking device;determining, based on the direction of the body movement, a forward-backward body axis of a body; anddetermining a base orientation of a tracking device relative to the forward-backward body axis; determining a first orientation of a head-mountable device (HMD) relative to the tracking device, wherein the HMD and the tracking device are separate devices; and determining a first head orientation relative to the body based on both: (a) the first orientation of the HMD relative to the tracking device and (b) the base orientation of the tracking device relative to the forward-backward body axis, wherein determining the first head orientation relative to the body comprises offsetting the first orientation of the HMD relative to the tracking device by the base orientation of the tracking device relative to the forward-backward body axis.