Patent ID: 11936901
Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of video encoding, the method comprising:
acquiring video data;
partitioning a current picture of the video data into a plurality of coding units (CUs), the current picture having a plurality of reference pictures;
while encoding the current picture:
selecting one of the reference pictures as a collocated picture of the current picture;
determining a temporal vector between the collocated picture and the current picture by (i) checking reference pictures associated with a spatially neighbouring block of a current CU in the current picture according to a fixed order until one reference picture associated with the spatially neighbouring block is the same as the collocated picture and (ii) choosing a motion vector of the spatially neighbouring block pointing to the reference picture as the temporal vector for the current CU;
splitting the current CU into a plurality of sub-CUs, each sub-CU corresponding to a respective subblock of the current picture;
obtaining a temporal motion vector predictor for each sub-CU of the current CU from (i) the temporal vector between the collocated picture and the current picture and (ii) motion information of a block in the collocated picture that corresponds to the respective subblock of the current picture; and
encoding the current CU according to the temporal motion vector predictors of the plurality of sub-CUs of the current CU; and

generating a video bitstream including data associated with the encoded current picture.