Visual-acuity-related enhancement for improved content presentation on head-mounted devices
AssigneeHeru Inc.
InventorsMohamed ABOU SHOUSHA, Alexander MILLER, Rashed KASHEM, Terry Keith BROCK
Life of this patent
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Abstract
A head-mounted device and related method may increase visual acuity during content presentation by determining spatial displacements between an eye and the lens vertex and applying transformation parameters to ensure accurate visual alignment during visual acuity testing.
Claims20
A head-mounted device for accurate visual acuity testing based on displacements between an eye and a lens vertex, the head-mounted device comprising:
- a headset lens, a head-mounted display, and an inward-facing sensor;
- and
- one or more processors and one or more memory storing program instructions that, when executed by the one or more processors, causes operations comprising:
- in connection with an initiation of a visual acuity test for a user, presenting a calibration stimulus at an optical infinity position on the head-mounted display;
- determining, with the inward-facing sensor, a pupil center of a pupil directed at the calibration stimulus, wherein the pupil is in a primary gaze position while directed at the calibration stimulus;
- determining a spatial displacement between the pupil center and a vertex of the headset lens;
- generating translational transformation parameters by generating a translation matrix based on the spatial displacement;
- and
- presenting a testing stimulus to the user during the visual acuity test while compensating for the spatial displacement by (1) applying a translational transformation to a testing stimulus position based on the translational transformation parameters to determine an adjusted testing stimulus position and (2) presenting the testing stimulus at the adjusted testing stimulus position on the head-mounted display.
A method comprising:
- presenting a calibration stimulus at a first display position on a head-mounted display of a head-mounted device;
- determining, via one or more sensors, a pupil center of a pupil directed at the calibration stimulus;
- determining a spatial displacement between the pupil center and a vertex of a headset lens that is between the head-mounted display and the pupil;
- generating transformation parameters based on the spatial displacement between the pupil center and the vertex;
- applying a transformation to a second position based on the transformation parameters to determine a third position on the head-mounted display;
- and
- presenting a testing stimulus at the third position on the head-mounted display.
One or more non-transitory machine-readable media storing program instructions that, when executed by one or more processors, cause operations comprising:
- presenting a first stimulus at a first display position on a head-mounted display of a head-mounted device;
- determining, with one or more sensors, a pupil center of a pupil directed at the first stimulus;
- determining a spatial displacement between the pupil center and a vertex of a headset lens of the head-mounted display;
- generating transformation parameters based on the spatial displacement;
- and
- presenting a second stimulus at a second display position by applying a transformation to an initial presentation position of the second stimulus based on the transformation parameters.
Dependencies are inferred from the claim text.