US 11,870,985 B2
Cross component filtering-based image coding apparatus and method
Junghak Nam, Seoul (KR); and Jangwon Choi, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Oct. 3, 2022, as Appl. No. 17/958,882.
Application 17/958,882 is a continuation of application No. 17/683,039, filed on Feb. 28, 2022, granted, now 11,496,734.
Application 17/683,039 is a continuation of application No. PCT/KR2020/011598, filed on Aug. 31, 2020.
Claims priority of provisional application 62/893,758, filed on Aug. 29, 2019.
Prior Publication US 2023/0057415 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/00 (2014.01); H04N 19/117 (2014.01); H04N 19/132 (2014.01); H04N 19/186 (2014.01); H04N 19/169 (2014.01); H04N 19/46 (2014.01); H04N 19/80 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/132 (2014.11); H04N 19/186 (2014.11); H04N 19/1883 (2014.11); H04N 19/46 (2014.11); H04N 19/80 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A decoding apparatus for image decoding, the decoding apparatus comprising:
a memory; and
at least one processor connected to the memory, the at least one processor configured to:
receive image information through a bitstream;
generate reconstructed luma samples and reconstructed chroma samples based on the image information;
perform an adaptive loop filtering (ALF) process on the reconstructed chroma samples to generate filtered reconstructed chroma samples; and
perform a cross-component filtering process on the filtered reconstructed chroma samples to generate modified filtered reconstructed chroma samples,
wherein the image information includes an adaptation parameter set (APS) including ALF data including information on cross-component filtering,
wherein the ALF data includes information on a number of cross-component filters for the cross-component filtering and information on cross-component filter coefficients, and
wherein the modified filtered reconstructed chroma samples are generated based on the filtered reconstructed chroma samples and the cross-component filter coefficients.