US 12,192,524 B2
Encoding/decoding method for video signal and device therefor
Moonmo Koo, Seoul (KR); Mehdi Salehifar, Seoul (KR); Seunghwan Kim, Seoul (KR); and Jaehyun Lim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Aug. 8, 2023, as Appl. No. 18/231,662.
Application 18/231,662 is a continuation of application No. 18/094,047, filed on Jan. 6, 2023, granted, now 11,770,560.
Application 18/094,047 is a continuation of application No. 17/282,120, granted, now 11,589,075, issued on Feb. 21, 2023, previously published as PCT/KR2019/012840, filed on Oct. 1, 2019.
Claims priority of provisional application 62/739,800, filed on Oct. 1, 2018.
Prior Publication US 2023/0388547 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/00 (2014.01); H04N 19/129 (2014.01); H04N 19/176 (2014.01); H04N 19/625 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/625 (2014.11) [H04N 19/129 (2014.11); H04N 19/176 (2014.11); H04N 19/70 (2014.11)] 11 Claims
OG exemplary drawing
 
1. An apparatus for decoding a video signal, comprising:
a memory configured to store the video signal; and
a processor coupled to the memory,
wherein the processor is configured to:
check whether a transform skip is applied to a current block;
obtain a transform index specifying which transform kernels are applied along horizontal and vertical directions of the current block based on that the transform skip is not applied to the current block;
determine a non-zero region based on the transform kernels specified by the transform index and a width and/or a height of the current block, wherein the transform kernels correspond to at least one of predefined transform types including DCT2, DST7 and DCT8;
perform an inverse transform on the non-zero region based on the transform kernels specified by the transform index to generate residual samples of the current block; and
generate reconstructed samples of the current block based on the residual samples.