Patent ID: 11882293
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for intra prediction, applied to an encoder, the method comprising:
obtaining multiple previously reconstructed neighbouring blocks corresponding to a current processing block;
determining prediction modes, that are signalled in a bitstream, corresponding to neighbouring blocks of the multiple previously reconstructed neighbouring blocks, to obtain multiple first prediction modes, wherein the first prediction modes include at least two directional modes;
performing, according to a preset operation rule, operation on multiple first prediction directions with different directions among the multiple first predication directions;
determining second prediction directions according to a result of the operation and a preset offset which is at least one of +1, −1, +2 or −2;
obtaining a prediction mode set according to the second prediction directions and the multiple first prediction modes; and
performing intra prediction on the current processing block based on the prediction mode set.