Patent ID: 9191658
Filing Date: 2015-11-17
Classification: G02B,G06F,H04N

Abstract:
1. A head-mounted display comprising: a display which displays a three-dimensional (3D) video image; a position obtaining unit configured to measure a position of an inner corner or outer corner of an eye of a viewer with respect to the display; a standard position storage unit configured to obtain and store, as a standard position relating to the position, the position of the inner corner or outer corner of the eye measured by the position obtaining unit, in calibration for determining the standard position; a position gap detecting unit configured to detect, as a position gap, a difference between (i) a position of the inner corner or outer corner of the eye of the viewer who is viewing content with respect to the display, which is newly measured by the position obtaining unit, and (ii) the standard position of the viewer stored in the standard position storage unit; and an image processing unit configured to perform, when the position gap is detected by the position gap detecting unit, image processing on the 3D video image to be displayed on the display, to rotated or parallely move the 3D video image according to the detected position gap; wherein the position gap detecting unit is configured to detect, as the position gap, a position gap resulting from rotation of the head-mounted display with a nose of the viewer being a pivot point, and in the detection, a downward rotation of a right side of the head-mounted display is a rotation around a point on a right raised surface of the viewer's nose, and a downward rotation of a left side of the head-mounted display is a rotation around a point on a left raised surface of the viewer's nose; wherein the position obtaining unit includes a camera which captures an image of the inner corner of the eye; and wherein the position gap detecting unit is configured to detect the position gap by calculating a rotation amount of the head-mounted display using a relative position from the pivot point that is a part of the raised surface of the nose of the viewer to a position of the camera.