US 12,294,723 B2
Method and apparatus for encoding/decoding a video using a motion compensation
Dong San Jun, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Jung Won Kang, Daejeon (KR); Hyun Suk Ko, Daejeon (KR); Sung Chang Lim, 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 LX SEMICON CO., LTD., Daejeon (KR)
Filed by LX Semicon Co., Ltd., Daejeon (KR)
Filed on Mar. 22, 2024, as Appl. No. 18/614,223.
Application 18/614,223 is a continuation of application No. 18/219,274, filed on Jul. 7, 2023, granted, now 12,058,345.
Application 18/219,274 is a continuation of application No. 17/717,366, filed on Apr. 11, 2022, granted, now 11,743,473, issued on Aug. 29, 2023.
Application 17/717,366 is a continuation of application No. 16/321,173, granted, now 11,336,899, issued on May 17, 2022, previously published as PCT/KR2017/008596, filed on Aug. 9, 2017.
Claims priority of application No. 10-2016-0102595 (KR), filed on Aug. 11, 2016; and application No. 10-2016-0158620 (KR), filed on Nov. 25, 2016.
Prior Publication US 2024/0275986 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/159 (2014.01); H04N 19/105 (2014.01); H04N 19/126 (2014.01); H04N 19/13 (2014.01); H04N 19/176 (2014.01); H04N 19/463 (2014.01); H04N 19/513 (2014.01); H04N 19/593 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/105 (2014.11); H04N 19/126 (2014.11); H04N 19/13 (2014.11); H04N 19/176 (2014.11); H04N 19/463 (2014.11); H04N 19/513 (2014.11); H04N 19/593 (2014.11); H04N 19/96 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
obtaining a plurality of sub-blocks by dividing the current block into sub-block units;
deriving a plurality of co-located sub-blocks for the plurality of sub-blocks;
deriving sub-block-based temporal merge candidates of the current block based on the plurality of co-located sub-blocks; and
generating a predicted block of the current block based on the sub-block-based temporal merge candidates,
wherein the co-located sub-blocks are located in a collocated picture which is one of reference pictures,
wherein deriving sub-block-based temporal merge candidates of the current block based on the plurality of co-located sub-blocks comprises:
based on that motion information of a co-located sub-block for a sub-block is available, motion information of the sub-block is derived by using motion information of the co-located sub-block,
based on that the motion information of the co-located sub-block for the sub-block is not available, the motion information of the sub-block is derived by using motion information of a center sub-block in a co-located block comprising the co-located sub-block, and
wherein the co-located block and co-located sub-blocks are derived by using a predefined motion vector, and
wherein a reference picture for the sub-block-based temporal merge candidates is selected as a firstly-ordered picture in a reference picture list for the current block.