Patent ID: 11930181
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 4:
5. A method for colour component prediction, applicable for a decoder and comprising:
parsing a bitstream to acquire prediction parameters of a current block, the prediction parameters comprising a prediction mode parameter and a size parameter of the current block;
when the prediction mode parameter indicates that a Matrix-based Intra Prediction (MIP) mode is adopted to determine an intra prediction value of the current block, determining an MIP weight matrix of the current block, a shift factor of the current block and an MIP input sample matrix of the current block, wherein the shift factor corresponding to different prediction mode parameters and different size parameters is equal to a fixed constant value; and
determining the intra prediction value of the current block according to the MIP weight matrix, the shift factor and the MIP input sample matrix,
wherein the MIP weight matrix of the current block is determined at least according to a block size index value of the current block.