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US 11,695,954 B2Granted
Method and apparatus for processing video data
AssigneeLG Electronics Inc.
InventorsJungsun Kim, Seungwook Park, Jaehyun Lim, Joonyoung Park, Younghee Choi, Jaewon Sung, Byeongmoon Jeon, Yongjoon Jeon
Life of this patent
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Abstract
A method for signalling an intra chroma prediction mode and a method for implementing the signalled intra chroma prediction mode, the intra chroma prediction mode taking an intropolation of previously predicted luma samples from neighboring blocks of video data to attain an intra chroma prediction of a current chroma prediction unit.
Claims3
A method for encoding a bitstream for a video signal by an encoding apparatus, the method comprising:
- determining prediction type information of a current block, the prediction type information specifying whether the current block is coded in inter mode or intra mode;
- encoding a luma intra prediction mode of the current block to the bitstream, based on that the prediction type information indicates that the current block is intra-coded, wherein the luma intra prediction mode is an intra prediction mode for a luma sample of the current block;
- determining a chroma intra prediction mode of the current block;
- and
- encoding intra chroma prediction mode information of the current block to the bitstream, the intra chroma prediction mode information specifying the chroma intra prediction mode of the current block, wherein the chroma intra prediction mode is an intra prediction mode for a chroma sample of the current block;
- wherein, the intra chroma prediction mode information of the current block is determined according to a predefined table based on the luma intra prediction mode of the current block and the chroma intra prediction mode of the current block, and
- wherein, the intra chroma prediction mode information of the current block has a specific value, based on that the chroma intra prediction mode of the current block is equal to the luma intra prediction mode of the current block.
4 more elements
A non-transitory computer-readable storage medium storing a bitstream generated by an encoding method, the encoding method comprising:
- determining prediction type information of a current block, the prediction type information specifying whether the current block is coded in inter mode or intra mode;
- encoding a luma intra prediction mode of the current block to the bitstream, based on that the prediction type information indicates that the current block is intra-coded, wherein the luma intra prediction mode is an intra prediction mode for a luma sample of the current block;
- determining a chroma intra prediction mode of the current block;
- and
- encoding intra chroma prediction mode information of the current block to the bitstream, the intra chroma prediction mode information specifying the chroma intra prediction mode of the current block, wherein the chroma intra prediction mode is an intra prediction mode for a chroma sample of the current block;
- wherein, the intra chroma prediction mode information of the current block is determined according to a predefined table based on the luma intra prediction mode of the current block and the chroma intra prediction mode of the current block, and
- wherein, the intra chroma prediction mode information of the current block has a specific value, based on that the chroma intra prediction mode of the current block is equal to the luma intra prediction mode of the current block.
4 more elements
A method of transmitting a bitstream which is generated by an encoding method, the encoding method comprising:
- determining prediction type information of a current block, the prediction type information specifying whether the current block is coded in inter mode or intra mode;
- encoding a luma intra prediction mode of the current block to the bitstream, based on that the prediction type information indicates that the current block is intra-coded, wherein the luma intra prediction mode is an intra prediction mode for a luma sample of the current block;
- determining a chroma intra prediction mode of the current block;
- and
- encoding intra chroma prediction mode information of the current block to the bitstream, the intra chroma prediction mode information specifying the chroma intra prediction mode of the current block, wherein the chroma intra prediction mode is an intra prediction mode for a chroma sample of the current block;
- wherein, the intra chroma prediction mode information of the current block is determined according to a predefined table based on the luma intra prediction mode of the current block and the chroma intra prediction mode of the current block, and
- wherein, the intra chroma prediction mode information of the current block has a specific value, based on that the chroma intra prediction mode of the current block is equal to the luma intra prediction mode of the current block.
4 more elements
Dependencies are inferred from the claim text.