Patent ID: 11863730
Assignee: SNAP INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC F  G  H

Claim 14:
15. A method of camera calibration for an AR/MR/VR display, the method comprising
projecting into an optical waveguide combiner a display image including fiducials, optically coupling first and second cameras to an output of the optical waveguide combiner, the first and second cameras having a combined field of view comprising a first field of view of the first camera and a second field of view of the second camera and including an overlapping region of the first field of view and the second field of view;
displaying, by the optical waveguide combiner, at an image plane, the display image as a virtual image with the fiducials, wherein the displayed virtual image is within the combined field of view of the first camera and the second camera, wherein the fiducials of the displayed virtual image at the image plane are within the overlapping region of the first field of view and the second field of view;
capturing by the first camera a first image of the virtual image;
capturing by the second camera a second image of the virtual image; and
electronically stitching the captured first image and second image together;
wherein electronically stitching the captured first image and second image together comprises electronically adjusting the captured first image and captured second image by moving the captured first image and the captured second image to align the fiducials of the first image with the fiducials of the second image.