US 11,729,420 B2
Intra-prediction method using filtering, and apparatus using the method
Yongjoon Jeon, Seoul (KR); Seungwook Park, Seoul (KR); Jaehyun Lim, Seoul (KR); Jungsun Kim, Seoul (KR); Joonyoung Park, Seoul (KR); Younghee Choi, Seoul (KR); Jaewon Sung, Seoul (KR); and Byeongmoon Jeon, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jan. 18, 2022, as Appl. No. 17/577,830.
Application 17/577,830 is a continuation of application No. 16/914,766, filed on Jun. 29, 2020, granted, now 11,272,208.
Application 16/914,766 is a continuation of application No. 16/251,018, filed on Jan. 17, 2019, granted, now 10,728,576, issued on Jul. 28, 2020.
Application 16/251,018 is a continuation of application No. 15/676,129, filed on Aug. 14, 2017, granted, now 10,212,453, issued on Feb. 19, 2019.
Application 15/676,129 is a continuation of application No. 15/217,607, filed on Jul. 22, 2016, granted, now 9,736,496, issued on Aug. 15, 2017.
Application 15/217,607 is a continuation of application No. 14/000,639, granted, now 9,420,294, issued on Aug. 16, 2016, previously published as PCT/KR2012/001287, filed on Feb. 21, 2012.
Claims priority of provisional application 61/445,538, filed on Feb. 23, 2011.
Prior Publication US 2022/0141486 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/593 (2014.01); H04N 19/61 (2014.01); H04N 19/91 (2014.01); H04N 19/182 (2014.01); H04N 19/80 (2014.01); H04N 19/85 (2014.01); H04N 19/11 (2014.01); H04N 19/117 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/593 (2014.11) [H04N 19/11 (2014.11); H04N 19/117 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/61 (2014.11); H04N 19/80 (2014.11); H04N 19/85 (2014.11); H04N 19/91 (2014.11)] 9 Claims
OG exemplary drawing
 
1. An image encoding method performed by an encoding apparatus, the method comprising:
deriving a prediction mode of a current block as an intra planar prediction mode;
deriving neighboring reference samples of the current block, wherein the reference samples include left reference samples and upper reference samples;
deriving a prediction sample of the current block based on the neighboring reference samples;
generating information on the prediction mode; and
encoding image information including the information on the prediction mode,
wherein the prediction sample is derived based on 4 reference samples among the neighboring reference samples,
wherein the 4 reference samples include a first reference sample located in the same row with the prediction sample, a second reference sample located in a lower side of the first reference sample, a third reference sample located in a same column with the prediction sample, and a fourth reference sample located in a right side of the third reference sample, and
wherein, the second reference sample is derived based on a sample located in a lower side of a lowest sample among the left reference samples adjacent to a left boundary of the current block, and the fourth reference sample is derived based on a sample located in a right side of a right-most sample among the upper reference samples adjacent to an upper boundary of the current block.