Patent ID: 11889084
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An image encoding method performed by an encoding apparatus, the method comprising:
determining whether to use a subblock-based temporal motion vector predictor (SbTMVP) candidate of a sub-block unit for a current block;
generating a flag indicating whether to use the SbTMVP candidate of the sub-block unit for the current block;
deriving the SbTMVP candidate of the sub-block unit for the current block based on motion vectors of corresponding sub-blocks related to current sub-blocks split from the current block;
constructing a merge candidate list including the SbTMVP candidate of the sub-block unit for the current block;
generating a candidate index indicating a candidate applied to the current block among the candidates in the merge candidate list; and
encoding image information including the flag and the candidate index to output a bitstream,
wherein the corresponding sub-blocks are located in a reference picture and the motion vectors of the corresponding sub-blocks are derived based on a motion vector of a left neighboring block for the current block, and
wherein the SbTMVP candidate of the sub-block unit is determined not to be used for the current block based on a size of the current block being smaller than a fixed sub-block size which is pre-defined as a minimum sub-block size of 8×8.