US 12,470,703 B2
Method and apparatus for deriving intra prediction mode
Jin-Ho Lee, Daejeon (KR); Jae-Gon Kim, Goyang-si (KR); Jung-Won Kang, Daejeon (KR); Do-Hyeon Park, Goyang-si (KR); Yung-Lyul Lee, Seoul (KR); Ha-Hyun Lee, Seoul (KR); Sung-Chang Lim, Daejeon (KR); Hui-Yong Kim, Daejeon (KR); Ji-Hoon Do, Busan (KR); and Yong-Uk Yoon, Jeju-si (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); Industry-University Cooperation Foundation Korea Aerospace University, Goyang-si (KR); and Industry-Academia Cooperation Group 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-Academia Cooperation Group of Sejong University, Seoul (KR)
Filed on Mar. 4, 2024, as Appl. No. 18/594,340.
Application 18/594,340 is a continuation of application No. 17/739,365, filed on May 9, 2022, granted, now 11,956,426.
Application 17/739,365 is a continuation of application No. 16/983,218, filed on Aug. 3, 2020, granted, now 11,363,260, issued on Jun. 14, 2022.
Application 16/983,218 is a continuation of application No. 16/299,661, filed on Mar. 12, 2019, granted, now 10,771,781, issued on Sep. 8, 2020.
Claims priority of application No. 10-2018-0028839 (KR), filed on Mar. 12, 2018; and application No. 10-2019-0026904 (KR), filed on Mar. 8, 2019.
Prior Publication US 2024/0223755 A1, Jul. 4, 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 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/11 (2014.11) [H04N 19/105 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 12 Claims
OG exemplary drawing
 
1. A decoding method, comprising:
deriving a prediction mode of a target block;
generating a prediction block for the target block by performing prediction for the target block that uses the prediction mode; and
generating a reconstructed block for the target block using the prediction block,
wherein:
the prediction is performed based on a first difference and a second difference,
the first difference is determined based on a value of a first pixel and a value of a second pixel,
the second difference is determined based on a value of a third pixel and a value of a fourth pixel,
the first pixel is adjacent to an upper side of a fifth pixel,
the second pixel is adjacent to a lower side of the fifth pixel,
the third pixel is adjacent to a left side of the fifth pixel, and
the fourth pixel is adjacent to a right side of the fifth pixel.