US 11,930,179 B2
Video encoding/decoding method, apparatus, and recording medium having bitstream stored thereon
Sung Chang Lim, Daejeon (KR); Jung Won Kang, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Jin Ho Lee, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Yung Lyul Lee, Seoul (KR); Ji Yeon Jung, Seoul (KR); Nam Uk Kim, Seoul (KR); Myung Jun Kim, Seoul (KR); Yang Woo Kim, Seoul (KR); Dae Yeon Kim, Seoul (KR); Jae Gon Kim, Goyang-si (KR); and Do Hyeon Park, Goyang-si (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNI, Seoul (KR); CHIPS & MEDIA, INC, Seoul (KR); and INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR)
Appl. No. 17/419,142
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR); CHIPS & MEDIA, INC, Seoul (KR); and INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR)
PCT Filed Dec. 27, 2019, PCT No. PCT/KR2019/018584
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/139008, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 10-2018-0172785 (KR), filed on Dec. 28, 2018; application No. 10-2019-0027494 (KR), filed on Mar. 11, 2019; and application No. 10-2019-0054160 (KR), filed on May 9, 2019.
Prior Publication US 2022/0109846 A1, Apr. 7, 2022
Int. Cl. H04N 19/132 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/105 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 18 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
deriving a value of a first flag indicating whether an MPM mode is applied for a current block;
deriving, based on the value of the first flag, a value of a second flag indicating whether an intra prediction mode of the current block is a Planar mode;
deriving, based on the value of the second flag, the intra prediction mode of the current block; and
generating a prediction block of the current block by performing an intra prediction for the current block based on the intra prediction model,
wherein the deriving the value of the second flag is performed based on whether a reference sample line used for the intra prediction of the current block is a first reference sample line directly adjacent to the current block.