US 12,289,454 B2
Method and apparatus for image encoding/decoding, transmitting for bitstream based on an MPM list using multiple reference lines
Sung Chang Lim, Daejeon (KR); Hyun Suk Ko, Daejeon (KR); Jung Won Kang, Daejeon (KR); Jin Ho Lee, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Dong San Jun, Daejeon (KR); and Hui Yong Kim, Daejeon (KR)
Assigned to LX Semicon Co., Ltd., Daejeon (KR)
Filed by LX SEMICON CO., LTD., Daejeon (KR)
Filed on Jul. 26, 2023, as Appl. No. 18/226,432.
Application 18/226,432 is a continuation of application No. 17/524,570, filed on Nov. 11, 2021, granted, now 12,143,598.
Application 17/524,570 is a continuation of application No. 16/767,478, granted, now 11,218,704, issued on Jan. 4, 2022, previously published as PCT/KR2018/014812, filed on Nov. 28, 2018.
Claims priority of application No. 10-2017-0160139 (KR), filed on Nov. 28, 2017; application No. 10-2017-0168473 (KR), filed on Dec. 8, 2017; and application No. 10-2018-0071216 (KR), filed on Jun. 21, 2018.
Prior Publication US 2023/0370615 A1, Nov. 16, 2023
Int. Cl. H04N 19/159 (2014.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11)] 15 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
deriving index information indicating one of a plurality of reference sample lines;
deriving a reference sample line of a current block based on the index information;
deriving an intra prediction mode for the current block based on intra mode information; and
deriving prediction samples for the current block based on the reference sample line and the intra prediction mode,
wherein the intra mode information includes at least one of Most Probable Mode (MPM) flag information, an MPM index indicating an intra prediction mode candidate included in an MPM list, and remaining mode information indicating a remaining mode, and
wherein only the MPM index among (i) the MPM flag information, (ii) the MPM index and (iii) the remaining mode information is signaled based on the index information not indicating a first reference sample line adjacent to the current block.