US 12,095,999 B2
Image encoding/decoding method and recording medium for same
Sung Chang Lim, Daejeon (KR); Jung Won Kang, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Dong San Jun, Daejeon (KR); Hyun Suk Ko, Daejeon (KR); Jin Ho Lee, Daejeon (KR); Seung Hyun Cho, Daejeon (KR); Hui Yong Kim, Daejeon (KR); and Jin Soo Choi, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Jul. 3, 2023, as Appl. No. 18/346,488.
Application 18/346,488 is a continuation of application No. 17/511,826, filed on Oct. 27, 2021, granted, now 11,743,470.
Application 17/511,826 is a continuation of application No. 17/038,332, filed on Sep. 30, 2020, granted, now 11,206,407, issued on Dec. 21, 2021.
Application 17/038,332 is a continuation of application No. 16/099,998, granted, now 10,834,404, issued on Nov. 10, 2020, previously published as PCT/KR2017/005351, filed on May 23, 2017.
Prior Publication US 2023/0353751 A1, Nov. 2, 2023
Int. Cl. H04N 19/50 (2014.01); H04N 19/105 (2014.01); H04N 19/117 (2014.01); H04N 19/124 (2014.01); H04N 19/139 (2014.01); H04N 19/51 (2014.01); H04N 19/52 (2014.01); H04N 19/91 (2014.01)
CPC H04N 19/139 (2014.11) [H04N 19/117 (2014.11); H04N 19/124 (2014.11); H04N 19/51 (2014.11); H04N 19/52 (2014.11); H04N 19/91 (2014.11)] 5 Claims
OG exemplary drawing
 
1. A method of decoding a video, the method comprising:
deriving multiple motion vectors for a current block according to an inter-prediction direction of the current block;
determining multiple prediction blocks for the current block by using the multiple motion vectors; and
obtaining a final prediction block for the current block based on a weighted sum of the multiple prediction blocks,
wherein weights for the weighted sum of the multiple prediction blocks are derived based on index information specifying one of weights included in a pre-defined weight group,
wherein the inter-prediction direction indicates uni-directional inter prediction or bi-directional inter prediction, and
wherein the index information is explicitly signaled via a bitstream only when a size of the current block is equal to or greater than a threshold value and the inter-prediction direction of the current block indicates the bi-directional inter-prediction.