US 12,223,769 B2
Electronic device and operating method of electronic device for correcting error during gaze direction recognition
Cheoljun Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 12, 2022, as Appl. No. 17/718,905.
Application 17/718,905 is a continuation of application No. PCT/KR2022/002425, filed on Feb. 18, 2022.
Claims priority of application No. 10-2021-0084593 (KR), filed on Jun. 29, 2021.
Prior Publication US 2022/0415083 A1, Dec. 29, 2022
Int. Cl. G06V 40/16 (2022.01); G06F 3/01 (2006.01)
CPC G06V 40/171 (2022.01) [G06F 3/013 (2013.01); G06V 40/164 (2022.01)] 14 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a camera module comprising a camera and configured to generate an image frame;
memory; and
at least one processor,
wherein the at least one processor is configured to:
perform face recognition of a face with respect to the image frame;
perform extraction of a feature point of the face in response to the face being recognized during the face recognition;
recognize a face direction of the face in response to the feature point of the face being extracted;
generate gaze direction information by recognizing a gaze direction of the face in response to the recognition of the face direction, wherein the gaze direction information comprises consecutive image frames corresponding to the gaze direction of the face;
generate filtered gaze direction information by performing filtering that restricts a degree of change of the gaze direction among the consecutive image frames in response to the recognition of the gaze direction; and
store the filtered gaze direction information in the memory,
wherein the filtering restricts the degree of change of the gaze direction based on the gaze direction information recognized from the image frame, previously filtered gaze direction information recognized from a previous image frame, and a filtering coefficient stored in the memory, and
wherein the filtering coefficient is adjusted dynamically.