Patent ID: 11943434
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A non-transitory computer-readable storage medium storing a bitstream generated by a method, the method comprising:
determining a cross-component linear model (CCLM) mode as an intra prediction mode of a current chroma block;
deriving a specific value for the current chroma block;
deriving specific top neighboring chroma samples and specific left neighboring chroma samples of the current chroma block based on a width and a height of the current chroma block and the specific value;
deriving CCLM parameters based on the specific top neighboring chroma samples and the specific left neighboring chroma samples;
deriving prediction samples for the current chroma block based on the CCLM parameters; and
encoding image information including prediction related information for the current chroma block; and
generating the bitstream including the image information,
wherein the derived specific value is 2,
wherein based on the width and the height being greater than or equal to the specific value, top neighboring chroma samples of specific top positions among top neighboring chroma samples of the current chroma block are selected as the specific top neighboring chroma samples,
wherein the specific top positions are derived based on the number of the specific top neighboring chroma samples and the width of the current chroma block,
wherein based on the width and the height being greater than or equal to the specific value, left neighboring chroma samples of specific left positions among left neighboring chroma samples of the current chroma block are selected as the specific left neighboring chroma samples, and
wherein the specific left positions are derived based on the number of the specific left neighboring chroma samples and the height of the current chroma block.