Patent ID: 11917145
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A non-transitory computer-readable digital storage medium, storing a bitstream generated by a method, the method comprising:
deriving prediction samples of a current block in a current picture;
generating prediction related information;
deriving residual samples based on the prediction samples;
generating residual information based on the residual samples;
generating reconstructed samples based on the residual samples and the prediction samples;
determining whether an adaptive loop filter (ALF) is applied;
determining whether fixed filter set is applied;
deriving filter coefficients for the ALF for the reconstructed samples;
generating coefficient information for the ALF based on the filter coefficients; and
generating the bitstream by encoding image information including information related to whether the ALF is applied, the coefficient information, the prediction related information and the residual information,
wherein the coefficient information is encoded based on Exponential-Golomb coding,
wherein the Exponential-Golomb coding is based on a fixed order
wherein the image information further includes information on a fixed filter index indicating one of the fixed filters for the ALF based on the fixed filter set being applied,
wherein the filter coefficients are derived based on the information on the fixed filter index,
wherein the information on the fixed filter index is obtained based on a binarization process, and
wherein the binarization process is performed based on a truncated binary (TB) binarization.