Method and apparatus for intra-prediction coding of video data
AssigneesHyundai Motor Company, Kia Motors Corporation, Ewha University-Industry Collaboration Foundation
InventorsJe Won Kang, Sang Hyo Park, Seung Woork Park, Wha Pyeong Lim
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Abstract
A method and apparatus for intra-prediction coding of video data are provided. The apparatus includes a decoder that is configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor that is configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
Claims18
A method of decoding video data, comprising:
- decoding, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, the intra-prediction type being indicated from among matrix based intra-prediction (MIP) and regular intra-prediction;
- and
- generating a prediction block for the current block by selectively performing the MIP or the regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element,
- wherein the generating of the prediction block for the current block by performing the regular intra-prediction includes:
- deriving Most Probable Mode (MPM) candidates based on a regular intra-prediction mode of each of neighboring blocks adjacent to the current block and configuring an MPM list for the current block;
- and
- deriving a regular intra-prediction mode for the current block based on the MPM list,
- wherein, in response to determining that an intra-prediction type of the neighboring block is the MIP, the regular intra-prediction mode of the neighboring block is set as a PLANAR mode,
- when the MIP is performed on the luma block, and the intra-prediction mode of the luma block is used as an intra-prediction mode of a chroma block corresponding to the luma block, the regular intra-prediction mode for the luma block is set as the PLANAR mode.
(canceled)
An apparatus for decoding video data, comprising:
- a decoder configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, the intra-prediction type being indicated from among matrix based intra-prediction (MIP) and regular intra-prediction;
- and
- an intra-predictor configured to generate a prediction block for the current block by selectively performing the MIP or the regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element,
- wherein, as a part of the generating of the prediction block for the current block by performing the regular intra-prediction, the intra-predictor is configured to:
- derive Most Probable Mode (MPM) candidates based on a regular intra-prediction mode of each of neighboring blocks adjacent to the current block and configure an MPM list for the current block;
- and
- derive a regular intra-prediction mode for the current block based on the MPM list,
- wherein, in response to determining that an intra-prediction type of the neighboring block is the MIP, the regular intra-prediction mode of the neighboring block is set as a PLANAR mode,
- wherein, when the MIP is performed on the luma block, and the intra-prediction mode of the luma block is used as an intra-prediction mode of a chroma block corresponding to the luma block, the regular intra-prediction mode for the luma block is set as the PLANAR mode.
(canceled)
Dependencies are inferred from the claim text.