US 11,749,020 B2
Method and apparatus for multi-face tracking of a face effect, and electronic device
Gao Liu, Beijing (CN); and Xin Lin, Beijing (CN)
Assigned to BEIJING MICROLIVE VISION TECHNOLOGY CO., LTD, Beijing (CN)
Appl. No. 16/968,209
Filed by BEIJING MICROLIVE VISION TECHNOLOGY CO., LTD, Beijing (CN)
PCT Filed Dec. 25, 2018, PCT No. PCT/CN2018/123642
§ 371(c)(1), (2) Date Aug. 7, 2020,
PCT Pub. No. WO2020/019666, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 201810838375.3 (CN), filed on Jul. 27, 2018.
Prior Publication US 2021/0027046 A1, Jan. 28, 2021
Int. Cl. G06V 40/16 (2022.01); G06T 7/62 (2017.01); G06V 40/18 (2022.01)
CPC G06V 40/171 (2022.01) [G06T 7/62 (2017.01); G06V 40/193 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A method for multi-face tracking of a face effect, comprising:
selecting a face effect in response to an effect selection command;
selecting a face tracking type of the face effect in response to a face tracking type selection command;
generating a face tracking sequence based on the face tracking type, wherein the generating a face tracking sequence further comprises:
determining a number of faces to be tracked based on user input,
generating identifications information corresponding to a plurality of faces to be tracked,
generating the face tracking sequence based on the number of faces to be tracked and the identification information corresponding to the plurality of faces to be tracked, wherein the face tracking sequence is a sequence of the plurality of faces to be tracked, and wherein the face tracking sequence comprises the identification information corresponding to the plurality of faces to be tracked;
in response to recognizing a first face in a face image captured by an image sensor, searching the face tracking sequence to determine whether identification information corresponding to the first face exists in the face tracking sequence; and
in response to determining that identification information corresponding to the first face exists in the face tracking sequence, automatically superimposing the face effect on the first face.