US 12,217,421 B2
Point of gaze tracking with integrated calibration process
Eran Harpaz, Tel Aviv (IL)
Assigned to Neuralight Ltd., Tel Aviv (IL)
Filed by NeuraLight Ltd., Tel Aviv (IL)
Filed on Dec. 27, 2023, as Appl. No. 18/397,535.
Claims priority of provisional application 63/437,136, filed on Jan. 5, 2023.
Prior Publication US 2024/0233119 A1, Jul. 11, 2024
Int. Cl. G06T 7/00 (2017.01); G06V 10/82 (2022.01); G06V 40/18 (2022.01)
CPC G06T 7/0012 (2013.01) [G06V 10/82 (2022.01); G06V 40/18 (2022.01); G06T 2207/30041 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A computer-implemented method for tracking a point of gaze of a subject, comprising:
obtaining, by at least one computer processor, video of at least a portion of a face of the subject while the subject is viewing content of a test sequence presented within a display area of a display, wherein an integrated calibration process is performed during the test sequence, the integrated calibration process comprising:
determining, by analyzing the video a series of time points at which a gaze of the subject is dwelling on a visual target and, for at least each time point in the series of time points, a corresponding set of eye features;
after determining the series of time points, obtaining, for each of the time points in the series of time points, a location of a visual stimulus presented within the display area of the display; and
determining a mapping that maps a set of eye features to a point of gaze, wherein the determining is performed based at least on (i) the set of eye features for each of the time points in the series of time points and (ii) the location of the visual stimulus within the display area of the display for each of the time points in the series of time points; and
using the mapping to respectively map one or more sets of eye features to one or more points of gaze of the subject.