Patent ID: 7312766

Claim:
A method of motion compensation for a head mounted display (HMD) wherein a camera tracks movement, subject to possible delay, of an operator's head to capture images within a field of view controlled by the orientation of the operator's head, comprising the steps of: sending a sequence of captured images at a video capture rate from the camera to a processor associated with the head mounted display; obtaining camera position data identifying the field of view of the camera for each captured image; associating said camera position data with the corresponding captured images; providing HMD position data corresponding to a current position of the head mounted display; for each captured image received by the computer comparing the HMD position data with the camera position data associated with the captured image to determine whether an offset exists between a first field of view associated with the captured image and a second field of view corresponding to the current position of the head mounted display; in the absence of a said offset displaying the captured image or a portion thereof in the head mounted display; and in the presence of a said offset, transforming the captured image to create a transformed image comprising a portion of said captured image that overlaps said first and second fields of view and displaying said transformed image in the head mounted display in a part of said second field of view, the position of said part of said second field of view in the head mounted display corresponding to the position of the overlapping portion of the captured image in the second field of view.