US 12,470,702 B2
Image encoding/decoding method and device using MFM indicator and MPM indicator, and recording medium in which bitstream is stored
Jin Ho Lee, Daejeon (KR); Jung Won Kang, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Sung Chang Lim, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Jae Gon Kim, Goyang-si (KR); Ji Hoon Do, Busan (KR); Yong Uk Yoon, Jeju-si (KR); Do Hyeon Park, Goyang-si (KR); and Yung Lyul Lee, Seoul (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR); INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR); and INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR); and INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
Filed on Oct. 26, 2023, as Appl. No. 18/495,579.
Application 18/495,579 is a continuation of application No. 17/258,124, granted, now 11,818,340, previously published as PCT/KR2019/008260, filed on Jul. 5, 2019.
Claims priority of application No. 10-2018-0078553 (KR), filed on Jul. 6, 2018; application No. 10-2018-0112725 (KR), filed on Sep. 20, 2018; application No. 10-2018-0170437 (KR), filed on Dec. 27, 2018; and application No. 10-2019-0053116 (KR), filed on May 7, 2019.
Prior Publication US 2024/0064295 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/11 (2014.01); H04N 19/105 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01); H04N 19/184 (2014.01); H04N 19/186 (2014.01); H04N 19/593 (2014.01); H04N 19/70 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/11 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/184 (2014.11); H04N 19/186 (2014.11); H04N 19/593 (2014.11); H04N 19/119 (2014.11); H04N 19/70 (2014.11); H04N 19/96 (2014.11)] 5 Claims
OG exemplary drawing
 
1. An image decoding method comprising:
reconstructing a most frequent mode (MFM) indicator indicating whether an intra prediction mode of a current block is a predetermined intra prediction mode;
deriving, on the basis of the MFM indicator, the intra prediction mode of the current block; and
generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode,
wherein when the MFM indicator has a first value, the intra prediction mode of the current block is derived to be the predetermined intra prediction mode,
wherein when the MFM indicator has a second value, the intra prediction mode of the current block is derived on the basis of a most probable mode (MPM) list if a predetermined condition is satisfied, the MPM list constructed on the basis of intra prediction modes of neighboring blocks of the current block and,
wherein the MFM indicator is reconstructed from a bitstream only when a MPM indicator related to a most probable mode has a predetermined value.