US 11,729,373 B1
Calibration for head-mountable devices
Ritu Shah, Sunnyvale, CA (US); and Forrest C. Wang, Petaluma, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 13, 2021, as Appl. No. 17/402,392.
Claims priority of provisional application 63/078,810, filed on Sep. 15, 2020.
Int. Cl. H04N 17/00 (2006.01); H04R 1/02 (2006.01); H04N 5/38 (2006.01); H04N 23/80 (2023.01); H04N 23/695 (2023.01); H02J 7/00 (2006.01)
CPC H04N 17/004 (2013.01) [H04N 5/38 (2013.01); H04N 23/695 (2023.01); H04N 23/80 (2023.01); H04R 1/028 (2013.01); H02J 7/0042 (2013.01); H04R 2499/15 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A head-mountable device comprising:
a housing;
a camera supported by the housing;
a display element supported by the housing;
a window comprising a fiducial marker; and
a processor configured to:
with the camera, capture a first image of a first view, the first view including the fiducial marker of the window and a calibration pattern through the window;
based on the fiducial marker in the first image and the calibration pattern in the first image, determine a calibration factor;
with the camera, capture a second image of a second view;
apply the calibration factor to the second image to generate a third image; and
with the display element, present the third image.