US 12,382,065 B2
Image decoding method for residual coding, and device therefor
Jungah Choi, Seoul (KR); Sunmi Yoo, Seoul (KR); Junghak Nam, Seoul (KR); Jin Heo, Seoul (KR); Jangwon Choi, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Nov. 16, 2023, as Appl. No. 18/511,346.
Application 18/511,346 is a continuation of application No. 17/957,986, filed on Sep. 30, 2022, granted, now 11,882,296.
Application 17/957,986 is a continuation of application No. PCT/KR2021/003892, filed on Mar. 30, 2021.
Claims priority of provisional application 63/003,221, filed on Mar. 31, 2020.
Prior Publication US 2024/0107034 A1, Mar. 28, 2024
Int. Cl. H04N 19/18 (2014.01); H04N 19/184 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/18 (2014.11) [H04N 19/184 (2014.11); H04N 19/70 (2014.11)] 4 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, comprising:
obtaining a dependent quantization enabled flag from a bitstream, wherein the dependent quantization enabled flag equal to 1 represents that dependent quantization is enabled, and the dependent quantization enabled flag equal to 0 represents that the dependent quantization is disabled;
obtaining a Transform Skip Residual Coding (TSRC) disabled flag based on the dependent quantization enabled flag, wherein the TSRC disabled flag equal to 1 represents that a residual coding syntax is used, and the TSRC disabled flag equal to 0 represents that a TSRC syntax is used;
obtaining residual information for a current block based on the TSRC disabled flag;
deriving residual samples of the current block based on the residual information; and
generating a reconstructed picture based on the residual samples,
wherein the TSRC disabled flag is obtained from the bitstream based on a value of the dependent quantization enabled flag being equal to 0, and
wherein the TSRC disabled flag is obtained from a slice header of the bitstream.