US 12,169,918 B2
Method and apparatus for calibrating augmented reality headsets
Johnathon Scott Selstad, San Francisco, CA (US); and David Samuel Holz, San Francisco, CA (US)
Assigned to Ultrahaptics IP Two Limited, Bristol (GB)
Filed by Ultrahaptics IP Two Limited, Bristol (GB)
Filed on Sep. 13, 2023, as Appl. No. 18/367,947.
Application 18/367,947 is a continuation of application No. 17/741,096, filed on May 10, 2022, granted, now 11,798,141.
Application 17/741,096 is a continuation of application No. 16/675,071, filed on Nov. 5, 2019, granted, now 11,354,787, issued on Jun. 7, 2022.
Claims priority of provisional application 62/756,053, filed on Nov. 5, 2018.
Prior Publication US 2023/0419460 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 5/80 (2024.01); G06T 19/00 (2011.01); G06T 19/20 (2011.01)
CPC G06T 5/80 (2024.01) [G06T 19/006 (2013.01); G06T 19/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
providing a calibration image to a display screen that is viewable through a reflector of an AR headset;
providing an inverse of the calibration image to a display of the AR headset, such that the inverse calibration image is reflected from the reflector and observed by a camera while the camera is simultaneously observing the calibration image on the display screen,
wherein the camera observes the inverse calibration image projected onto the reflector of the AR headset;
creating a distortion mapping transform, such that a projection position of the inverse calibration image provided to the display of the AR headset, as observed by the camera, cancels out an acceptable portion of the calibration image as observed through the reflector by the camera; and
providing the distortion mapping transform for implementation by the AR headset.