Patent ID: 11909981
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A decoding apparatus for a video decoding, the decoding apparatus comprising:
a memory; and
at least one processor connected to the memory, the at least one processor configured to:
receive a bitstream including split flag information for a current coding block and prediction information for the current coding block;
derive a current luma transform block from the current coding block based on the split flag information;
derive context information on a bin constituting a codeword of a syntax element cbf_luma that specifies whether a luma residual other than 0 is present in the current luma transform block;
decode the bin based on the context information;
derive a value of the syntax element cbf_luma based on the decoded bin; and
generate a reconstructed block for the current coding block based on the prediction information and the value of the syntax element cbf_luma,
wherein the context information is derived based on information on a transform depth (trafoDepth) of the current luma transform block,
wherein the luma residual other than 0 is not present in the current luma transform block based on the value of the syntax element cbf_luma being 0, and
wherein at least one luma residual other than 0 is present in the current luma transform block based on the value of the syntax element cbf_luma being 1.