US 12,380,603 B2
Extrinsic calibration between display and eye-tracking camera in head-mounted devices
Zhiheng Jia, Sunnyvale, CA (US); Chao Guo, Los Altos, CA (US); Scott Fullam, Palo Alto, CA (US); and Jeffrey Neil Margolis, Seattle, WA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by GOOGLE LLC, Mountain View, CA (US)
Filed on Jan. 15, 2024, as Appl. No. 18/412,931.
Claims priority of provisional application 63/479,876, filed on Jan. 13, 2023.
Prior Publication US 2024/0242381 A1, Jul. 18, 2024
Int. Cl. G06T 7/80 (2017.01); G02B 27/01 (2006.01); G06F 3/01 (2006.01)
CPC G06T 7/80 (2017.01) [G02B 27/0172 (2013.01); G02B 27/0176 (2013.01); G06F 3/013 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method, comprising:
capturing, via an eye-tracking camera on a head-mounted display (HMD), a reflection of a pixel from a first lens of the HMD, the pixel being illuminated within a display associated with a second lens of the HMD;
determining a current position of the reflection within a field of view of the eye-tracking camera; and
determining a difference between the current position of the reflection within the field of view and a calibration position within the field of view.