US 12,425,569 B2
Method and apparatus 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. 24, 2024, as Appl. No. 18/751,643.
Application 17/688,049 is a division of application No. 17/057,264, granted, now 11,303,884, issued on Apr. 12, 2022, previously published as PCT/KR2019/007546, filed on Jun. 21, 2019.
Application 18/751,643 is a continuation of application No. 18/592,454, filed on Feb. 29, 2024.
Application 18/592,454 is a continuation of application No. 17/688,049, filed on Mar. 7, 2022, granted, now 11,956,418, issued on Apr. 9, 2024.
Claims priority of application No. 10-2018-0071539 (KR), filed on Jun. 21, 2018.
Prior Publication US 2024/0357074 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/103 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/103 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/593 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A method of decoding an image, comprising:
determining an intra prediction mode for a chroma component of a current block in the image;
performing, based on the intra prediction mode, intra prediction for the chroma component of the current block using one or more reference sample lines; and
obtaining reconstruction samples for the chroma component of the current block based on prediction samples resulting from the intra prediction,
wherein a number of the one or more reference sample lines available for the chroma component of the current block is adaptively determined based on a position of the current block in a coding tree unit (CTU),
wherein, in response to a case where the current block adjoins the boundary of the CTU, the intra prediction for the chroma component of the current block is performed using one reference sample line, and
wherein, in response to a case where the current block does not adjoin the boundary of the CTU, the intra prediction for the chroma component of the current block is performed using three reference sample lines.