US 11,743,455 B2
Method and device for processing video signal
Bae Keun Lee, Gyeonggi-do (KR)
Assigned to KT CORPORATION, Gyeonggi-do (KR)
Filed by KT CORPORATION, Gyeonggi-do (KR)
Filed on Jun. 9, 2022, as Appl. No. 17/836,762.
Application 17/836,762 is a division of application No. 17/103,084, filed on Nov. 24, 2020, granted, now 11,388,395.
Application 17/103,084 is a division of application No. 16/619,353, granted, now 11,089,299, issued on Aug. 10, 2021, previously published as PCT/KR2018/010413, filed on Sep. 6, 2018.
Claims priority of application No. 10-2017-0115266 (KR), filed on Sep. 8, 2017; and application No. 10-2017-0115267 (KR), filed on Sep. 8, 2017.
Prior Publication US 2022/0311999 A1, Sep. 29, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/176 (2014.01); H04N 19/159 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/593 (2014.11)] 10 Claims
OG exemplary drawing
 
1. A method of decoding an image with a decoding apparatus, comprising:
determining, based on a tree-based block division, a current block from a coding block in the image, the tree-based block division including at least one of a quad-tree division, a binary-tree division, or a triple-tree division;
determining an intra prediction mode of the current block from intra prediction modes pre-defined in the decoding apparatus;
deriving reference samples for intra prediction of the current block;
generating a prediction block of the current block by performing the intra prediction for the current block based on the intra prediction mode and the reference samples,
wherein the reference samples include at least one of a top reference sample adjacent to the current block or a left reference sample adjacent to the current block,
wherein the method further comprises:
determining whether to apply a modification process to the current block or not,
wherein whether to apply the modification process to the current block or not is implicitly determined by comparing a size of the current block with a threshold value, and
wherein, in response to the determination that the modification process is applied to the current block, prediction samples of a first region in the current block are output through modification using at least one reference sample, and prediction samples of a second region in the current block are output without the modification.