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Systems and methods for augmented reality

  • US 10,678,324 B2
  • Filed: 12/14/2018
  • Issued: 06/09/2020
  • Est. Priority Date: 03/05/2015
  • Status: Active Grant
First Claim
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1. An augmented reality (AR) display system, comprising:

  • a hand-held component coupled to an electromagnetic field emitter, the electromagnetic field emitter emitting a magnetic field;

    a head-mounted component having a display system that displays virtual content to a user, the head mounted component coupled to an electromagnetic sensor measuring a parameter related to a magnetic flux at the electromagnetic sensor resulting from the magnetic field, wherein a head pose of the head-mounted component in a known coordinate system is known;

    a depth sensor measuring a distance in the known coordinate system, wherein the depth sensor comprises a depth camera having a first field of view (FOV);

    a world capture camera, wherein the world capture camera has a second FOV at least partially overlapping with the first FOV;

    a picture camera, wherein the picture camera has a third FOV at least partially overlapping with the first FOV and the second FOV; and

    a controller communicatively coupled to the hand-held component, the head-mounted component, and the depth sensor, the controller receiving the parameter related to the magnetic flux at the electromagnetic sensor from the head mounted component and receiving the distance from the depth sensor,wherein the controller determines a hand pose of the hand-held component based at least in part on the parameter related to the magnetic flux measured by the electromagnetic sensor and the distance measured by the depth sensor,wherein the depth camera, the world capture camera, and the picture camera are configured to capture respective first, second, and third images,wherein the controller is programmed tosegment the second and third images, andfuse the second and third images after segmenting the second and third images to generate a fused image, andwherein measuring the distance in the known coordinate system comprises;

    generating a hypothetical distance by analyzing the first image from the depth camera; and

    generating the distance by analyzing the hypothetical distance and the fused image.

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