HEAD-MOUNTABLE APPARATUS AND SYSTEMS
First Claim
1. A head mountable display (HMD) comprising:
- an upward facing camera associated with a wide angle lens configured to capture images of an environment of the HMD; and
an image comparator operatively coupled to the upward facing camera, the image comparator being arranged to derive an indication of yaw of the HMD from images captured by the upward facing camera at different points in time.
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Accused Products
Abstract
A head mountable display (HMD) is provided that has an upward facing camera associated with a wide angle (such as a fisheye) lens arranged to capture images of the environment of the HMD. The HMD also includes an image comparator arranged to derive an indication of yaw of the HMD from images captured by the upward facing camera at different points in time. The image comparator may be configured to perform two or more detection techniques to detect HMD yaw, and to combine the results of the two or more detection techniques. The HMD may also include a tilt detector. Here, the image comparator may be configured to ignore one or more portions of a captured image in dependence upon a current tilt of the HMD as detected by the tilt detector.
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Citations
15 Claims
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1. A head mountable display (HMD) comprising:
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an upward facing camera associated with a wide angle lens configured to capture images of an environment of the HMD; and an image comparator operatively coupled to the upward facing camera, the image comparator being arranged to derive an indication of yaw of the HMD from images captured by the upward facing camera at different points in time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system, comprising:
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a head mountable display (HMD) including; an upward facing camera associated with a wide angle lens configured to capture images of an environment of the HMD; and an image comparator operatively coupled to the upward facing camera, the image comparator being arranged to derive an indication of yaw of the HMD from images captured by the upward facing camera at different points in time; and one or more of a base device and an intermediate device operatively coupled to the HMD.
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13. A method of operation of a head mountable display (HMD) having an upward facing camera associated with a wide angle lens arranged to capture images of the environment of the HMD, the method comprising deriving, by one or more processors, an indication of yaw of the HMD from images captured by the upward facing camera at different points in time.
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14. (canceled)
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15. A non-transitory computer-readable storage medium on which computer readable instructions are stored, the instructions, when executed by one or more processors, causing the one or more processors to execute a method of operation of a head mountable display (HMD) having an upward facing camera associated with a wide angle lens arranged to capture images of the environment of the HMD, the method comprising deriving an indication of yaw of the HMD from images captured by the upward facing camera at different points in time.
Specification