US 11,961,299 B2
Method and apparatus for generating video fingerprint
Changguo Chen, Hangzhou (CN)
Assigned to Alibaba Group Holding Limited, George Town (KY)
Filed by Alibaba Group Holding Limited, Grand Cayman (KY)
Filed on Feb. 8, 2021, as Appl. No. 17/170,447.
Application 17/170,447 is a continuation of application No. PCT/CN2019/099051, filed on Aug. 2, 2019.
Claims priority of application No. 201810905169.X (CN), filed on Aug. 9, 2018.
Prior Publication US 2021/0166036 A1, Jun. 3, 2021
Int. Cl. G06V 20/40 (2022.01)
CPC G06V 20/46 (2022.01) 14 Claims
OG exemplary drawing
 
1. A method implemented by one or more computing devices, the method comprising:
performing shot boundary detection on content of a video;
determining a time duration of each shot according to positional points of a shot boundary, and compose the time duration of each shot into a shot boundary time slice sequence; and
obtaining video fingerprint information according to the time slice sequence, wherein obtaining the video fingerprint information according to the time slice sequence comprises:
obtaining video fingerprint information of a current shot according to a difference between a time slice element of the current shot and a time slice element of an adjacent shot in the time slice sequence, obtaining the video fingerprint information of the current shot comprising:
separately calculating quantized differences of the time slice element of the current shot with a time slice element of a previous shot and a time slice element of a next shot in the time slice sequence;
using the quantized differences corresponding to the time slice element of the current shot as an index item of the time slice element of the current shot; and
using the index item of the time slice element of the current shot, a video sequence number of the video and a shot sequence number of a time slice of the current shot as the video fingerprint information of the current shot.