US 12,219,131 B2
Method and apparatus for processing video signal
Bae Keun Lee, Gyeonggi-do (KR)
Assigned to KT CORPORATION, Gyeonggi-do (KR)
Filed by KT CORPORATION, Gyeonggi-do (KR)
Filed on Dec. 11, 2023, as Appl. No. 18/535,262.
Application 18/535,262 is a continuation of application No. 18/139,005, filed on Apr. 25, 2023, granted, now 11,889,064.
Application 18/139,005 is a continuation of application No. 17/572,983, filed on Jan. 11, 2022, granted, now 11,671,590, issued on Jun. 6, 2023.
Application 17/572,983 is a continuation of application No. 17/056,923, granted, now 11,259,015, issued on Feb. 22, 2022, previously published as PCT/KR2019/006221, filed on May 23, 2019.
Claims priority of application No. 10-2018-0059286 (KR), filed on May 24, 2018.
Prior Publication US 2024/0137494 A1, Apr. 25, 2024
Int. Cl. H04N 19/137 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/52 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/52 (2014.11); H04N 19/96 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A method of decoding a video, the method comprising:
deriving an affine merge candidate from a neighboring block adjacent to a current block;
generating a merge candidate list including the affine merge candidate;
determining one of a plurality of merge candidates in the merge candidate list based on index information signaled from a bitstream, the index information specifying the one of the plurality of merge candidates;
deriving first motion vectors of the current block based on the determined merge candidate;
deriving a second motion vector of the current block based on the first motion vectors of the current block, the second motion vector being derived in units of sub-blocks in the current block;
generating prediction samples of the current block by performing inter prediction on the current block based on the second motion vector;
obtaining residual samples of the current block; and
reconstructing the current block by summing the prediction samples and the residual samples,
wherein the affine merge candidate is derived based on corner motion vectors of the neighboring block, and
wherein, based on whether the neighboring block is included in the same CTU (Coding Tree Unit) as the current block, positions of corners corresponding to the corner motion vectors used to derive the affine merge candidate are differently determined.