| 摘要 |
A head mountable display (HMD) 20 has a head motion detection function and one or more operations which depend upon detected head motion. The detected head motion is stored as motion data, and the way in which the detected head motion is applied to a current operation depends upon the stored motion data. The head motion detection function may be enabled by a camera 122 or a hardware motion detector (332, fig, 9B) such as a piezoelectric accelerometer or optical fibre gyroscope. The motion data may comprise data dependent upon head motion of the user of the HMD aggregated with motion data for other users. A scaling may be applied between the available range of head motion for a particular user and the range of head motion required by a particular HMD operation. An HMD operation may require less head motion during an initial period of use than during a later period of use of the same operation. The HMD may comprise a gaze detector configured to detect eye orientation of the HMD user so as to detect image regions at which the user is looking. |
