Patent ID: 11917181
Assignee: KIA CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A non-transitory computer readable medium storing a bitstream containing encoded data for blocks of video data, the bitstream being decoded by processes of:
decoding, from the bitstream, a syntax element indicating an intra-prediction type of a current luma 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 luma block by selectively performing the MIP or the regular intra-prediction based on the intra-prediction type of the current luma block indicated by the syntax element,
wherein the generating of the prediction block for the current luma 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 luma block to configure an MPM list for the current luma block, wherein the regular intra-prediction mode of the neighboring block is set as a PLANAR mode when an intra-prediction type of the neighboring block is the MIP; and
deriving a regular intra-prediction mode for the current luma block based on the MPM list, and

wherein the generating of the prediction block for the current luma block by performing the MIP includes:
decoding, from the bitstream, a syntax element indicating an MIP mode for the current luma block;
deriving a boundary vector using neighboring samples adjacent to the current luma block based on a width and a height of the current luma block;
generating predicted samples for the current luma block based on matrix-vector multiplication between the boundary vector and a matrix predefined for the MIP mode; and
deriving the prediction block for the current luma block based on the predicted samples, and
wherein the deriving of the boundary vector using the neighboring samples adjacent to the current luma block includes:
decoding, from the bitstream, a syntax element indicating a concatenation order of first entries of the boundary vector derived from the left neighboring samples adjacent to the current luma block and second entries of the boundary vector derived from the above neighboring samples adjacent to the current luma block; and

concatenating the first entries and the second entries according to the concatenation order and thereby generating the boundary vector.