Patent ID: 11930191
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image decoding method performed by a decoding apparatus, the method comprising:
obtaining image information including luma mapping with chroma scaling (LMCS) related information from a bitstream;
deriving at least one LMCS codeword for an LMCS process based on the LMCS related information;
generating reconstructed luma samples based on the at least one LMCS codeword; and
generating modified reconstructed luma samples based on the reconstructed luma samples and the at least one LMCS codeword,
wherein the LMCS related information includes information on linear mapping,
wherein the at least one LMCS codeword is derived based on signaling of the information on the linear mapping, and
wherein the at least one LMCS codeword is a multiple of two.