US 12,223,721 B2
Method and apparatus for video frame processing
Mengye Lv, Guangdong (CN); Zhi Dong, Guangdong (CN); and Shenyuan Li, Guangdong (CN)
Assigned to Tencent Music Entertainment Technology (Shenzhen) Co., Ltd., Guangdong (CN)
Filed by Tencent Music Entertainment Technology (Shenzhen) Co., Ltd., Guangdong (CN)
Filed on Jan. 13, 2022, as Appl. No. 17/575,140.
Application 17/575,140 is a continuation of application No. PCT/CN2019/114271, filed on Oct. 30, 2019.
Claims priority of application No. 201910651319.3 (CN), filed on Jul. 18, 2019.
Prior Publication US 2022/0139085 A1, May 5, 2022
Int. Cl. G06V 20/40 (2022.01); G06F 16/783 (2019.01); G06V 10/74 (2022.01); G06V 10/82 (2022.01)
CPC G06V 20/48 (2022.01) [G06F 16/783 (2019.01); G06V 10/761 (2022.01); G06V 10/82 (2022.01); G06V 20/41 (2022.01); G06V 20/46 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method for video frame processing, comprising:
obtaining a convolutional neural network (CNN) feature of a target video frame and a local feature of the target video frame, the local feature of the target video frame comprising a first key point of the target video frame and a feature descriptor corresponding to the first key point;
performing dimension reduction on the CNN feature of the target video frame to obtain a CNN feature with a reduced dimension of the target video frame;
obtaining a first video frame from a plurality of sample video frames, a distance between a CNN feature with a reduced dimension of the first video frame and the CNN feature with the reduced dimension of the target video frame meeting a first preset condition;
obtaining a local feature of the first video frame, the local feature of the first video frame comprising a second key point in the first video frame and a feature descriptor corresponding to the second key point;
calculating a matching degree between the local feature of the first video frame and the local feature of the target video frame; and
determining the first video frame as a duplicate video frame of the target video frame if the matching degree meets a second preset condition.