Virtual reality headset with relative motion head tracker

摘要

A virtual reality headset that tracks motion of a user relative to a moving vehicle in which the user is located. The system updates the headset's display based on relative motion, rather than on absolute motion due to vehicle movement. Data from sensors on the headset, the vehicle, or both is analyzed to determine the pose (orientation, position, or both) of the headset relative to the vehicle. Sensors may include headset-mounted cameras that observe the vehicle's interior from the user's viewpoint. Analysis of camera images may use optical flow or it may compare images to reference images captured from known poses. The system may also combine data from headset sensors and vehicle sensors to calculate the relative pose. Headset-mounted cameras may function both as relative pose sensors for virtual reality, and as image capture devices for display of the real environment on the headset.

主权项

1. A virtual reality headset with a relative motion head tracker, comprising
a headset coupled to a head of a user, wherein said user is located in or on a vehicle that may move; a display coupled to said headset and viewable by said user; and, a relative motion head tracker comprising
one or more sensors that generate sensor data, wherein said sensor data measures one or more characteristics that vary based on one or both of a pose of said headset and a pose of said vehicle; and,a processor coupled to said one or more sensors and to said display;wherein said processor is configured to
receive said sensor data;calculate a pose of said headset relative to said vehicle from said sensor data;generate, retrieve, select, or modify a display image based on said pose of said headset relative to said vehicle; and,transmit said display image to said display; wherein said one or more characteristics comprise an acceleration of said vehicle on at least one axis; and, wherein said processor is further configured to
when said acceleration of said vehicle is outside a normal range, generate, retrieve, select, or modify said display image based on a last pose of said headset relative to said vehicle that was calculated when said acceleration of said vehicle was in said normal range.