Patent ID: 11889089
Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of transmitting a bitstream generated by a video encoding method, the video encoding method comprising:
determining whether intra block copy (IBC) prediction is used or not;
deriving, in case IBC prediction is determined to be used, a vector predictor of a block vector indicating a reference block for a current block to be predicted in a current picture;
encoding the block vector based on the vector predictor;
encoding a 1-bit flag indicating whether IBC prediction is used or not into a sequence parameter set; and
encoding the current block based on a prediction block related to the block vector,
wherein both the current block and the reference block are included in the current picture,
wherein the encoding the block vector comprises
generating a candidate list including a plurality of vector predictor candidates based on block vectors of blocks encoded by IBC prediction before the current block;
determining whether a number of vector predictor candidates included in the candidate list is less than a predetermined number;
adding a zero vector candidate into the candidate list in case the number of vector predictor candidates included in the candidate list is less than the predetermined number;
determining a predictor index indicating one of the vector predictor candidates included in the candidate list; and
encoding information indicating the vector predictor based on the predictor index,
wherein the information indicating the vector predictor is encoded by
determining whether or not the predetermined number is greater than 1;
encoding, in case the predetermined number is greater than 1, the information indicating the vector predictor into a bitstream; and
skipping the encoding of the information indicating the vector predictor into a bitstream in case the predetermined number is 1, and
wherein a block vector is not included in the candidate list in case the candidate list includes a vector predictor candidate as same as the block vector.