Patent ID: 11882286
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method of encoding a video signal, comprising:
generating residual samples of a current block for a luma components and chroma components;
generating a first transform skip flag specifying whether a transform is applied to the residual samples of the luma component based on a size of the current block being smaller than a predetermined first size;
generating a second transform skip flag and a third transform skip flag based on the size of the current block being smaller than the predetermined first size, wherein the second transform skip flag specifies whether a transform is applied to coefficients of a first chroma component and the third transform skip flag specifies whether a transform is applied to coefficients of a second chroma component;
performing a transform to the residual samples of the luma component based on one among transform kernel combinations to obtain transform coefficients of the current block, each transform kernel combination comprising a transform kernel in a horizontal direction and a transform kernel in a vertical direction;
performing quantization and entropy encoding on the transform coefficients; and
generating an index specifying the one among a plurality of transform kernel combinations, based on the size of the current block being smaller than a predetermined second size and the first transform skip flag being 0.