US 12,075,026 B2
Method and apparatus for encoding/decoding image
Ki Baek Kim, Daejeon (KR)
Assigned to B1 INSTITUTE OF IMAGE TECHNOLOGY, INC., Seoul (KR)
Filed by B1 INSTITUTE OF IMAGE TECHNOLOGY, INC., Seoul (KR)
Filed on Feb. 25, 2022, as Appl. No. 17/680,674.
Application 17/680,674 is a continuation of application No. 17/040,765, granted, now 11,297,309, previously published as PCT/KR2019/003777, filed on Apr. 1, 2019.
Claims priority of application No. 10-2018-0037812 (KR), filed on Apr. 1, 2018.
Prior Publication US 2022/0182602 A1, Jun. 9, 2022
Int. Cl. H04N 19/103 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/103 (2014.11) [H04N 19/119 (2014.11); H04N 19/176 (2014.11); H04N 19/593 (2014.11)] 7 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the method comprising:
generating a coding block using tree-based partitioning, the tree-based partitioning comprising splitting a square block into four square blocks having a same size with each other;
generating a plurality of sub-blocks by performing index-based partitioning for the coding block, the index-based partitioning comprising a first partitioning and a second partitioning, the first partitioning splits a 4N×4M coding block into four identical 4N×N sub-blocks or four identical N×4M sub-blocks, N being equal to or different from M, and the second partitioning splits a coding block into two equal parts horizontally or vertically; and
generating a prediction block of the coding block by performing intra prediction for each of the plurality of the sub-blocks,
wherein the intra prediction for the each of the plurality of the sub-blocks is performed based on a same intra prediction mode, and
wherein whether to perform the first partitioning or the second partitioning is determined based on a size of the coding block.