Patent ID: 11871034
Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method of claim 1, wherein obtaining the optimal BV of the first coding unit comprises:
maintaining a BV library at the encoder, wherein the BV library includes one or more BV candidates that are obtained from a BV search of a previously coded coding unit, the number of the one or more BV candidates is N, and N is a positive integer;
generating a list of BV candidates, wherein the list of BV candidates includes all the BVs in the BV library, BVs of spatial neighboring coding units and derived BVs of the first coding unit;
calculating a rate distortion cost for each BV in the list of BV candidates and selecting a BV to be the optimal BV of the first coding unit, wherein the selected BV has the minimal rate distortion cost; and
updating the BV library by adding one or more BVs from the list of BV candidates to replace one or more existing BVs in the BV library, wherein the updated BV library is used for determining optimal BVs of future coding units, the number of the added one or more BVs and the number of the replaced one or more existing BVs are respectively K, and K is a positive integer.