US 12,413,778 B2
Intra block copy-based encoding/decoding method, device, and bitstream storage medium
Ha Hyun Lee, Seoul (KR); Jung Won Kang, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Jin Ho Lee, Daejeon (KR); and Hui Yong Kim, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Jun. 18, 2024, as Appl. No. 18/747,300.
Application 18/747,300 is a division of application No. 17/613,395, granted, now 12,058,368, previously published as PCT/KR2020/007842, filed on Jun. 17, 2020.
Claims priority of application No. 10-2019-0071282 (KR), filed on Jun. 17, 2019; and application No. 10-2019-0174309 (KR), filed on Dec. 24, 2019.
Prior Publication US 2024/0340447 A1, Oct. 10, 2024
Int. Cl. H04N 19/593 (2014.01); H04N 19/105 (2014.01); H04N 19/176 (2014.01); H04N 19/513 (2014.01)
CPC H04N 19/593 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/513 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A method of decoding an image, the method comprising:
constructing a block vector candidate list of a current block;
deriving a block vector of the current block based on one of block vector candidates included in the block vector candidate list; and
obtaining prediction samples of the current block based on the block vector of the current block,
wherein constructing the block vector candidate list comprises,
in response to a number of block vector candidates included in the block vector candidate list being less than a maximum number, adding at least one of history-based block vector candidates included in a history-based block vector candidate list to the block vector candidate list; and
wherein whether a history-based block vector candidate is added to the block vector candidate list is determined by comparing the history-based block vector candidate with a block vector candidate already included in the block vector candidate list.