Patent ID: 11968370
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A non-transitory computer-readable medium for recording a bitstream, the bitstream comprising:
information about an intra prediction mode of a top-left sample in a current chroma block;
wherein the information about the intra prediction mode of the top-left sample in the current chroma block is obtained by:
generating the information about the intra prediction mode of the top-left sample in the current chroma block;
obtaining an intra prediction mode of a sample at a bottom-right location in a current luma block corresponding to the current chroma block, wherein the current luma block is split into at least two lower luma blocks including a lower luma block comprising the sample at the bottom-right location;
determining an intra prediction mode of the top-left sample of the current chroma block using the intra prediction mode of the sample at the bottom-right location and the information; and
generating a bitstream comprising the information about the intra prediction mode of the top-left sample in the current chroma block by performing intra prediction on the current chroma block using the intra prediction mode of the top-left sample of the current chroma block,
wherein the sample at the bottom-right location is a sample at a location of ½ of a width of the current luma block in a right direction from a location of a top-left sample in the current luma block and ½ of a height of the current luma block in a lower direction from the location of the top-left sample in the current luma block,
wherein the current luma block has one of a square shape and a non-square shape.