Patent ID: 11943475
Assignee: INTELLECTUAL DISCOVERY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An image encoding method performed by an image encoding apparatus, the method comprising:
determining an intra prediction mode of a current block;
configuring a reference sample for intra prediction of the current block;
obtaining prediction samples of the current block based on the intra prediction mode and the reference sample;
obtaining residual samples of the current block by using the prediction samples of the current block;
generating residual data of the current block by performing transformation on the residual samples;
encoding first MPM information based on the intra prediction mode of the current block, the first MPM information indicating whether a planar mode in a first MPM list is applied to the current block;
encoding second MPM information based on the intra prediction mode of the current block in response to the first MPM information indicating that the planar mode in the first MPM list is not applied to the current block, the second MPM information indicating the intra prediction mode of the current block in a second MPM list; and
encoding the residual data of the current block,
wherein the second MPM list comprises a first intra prediction mode of a neighboring block of the current block and a second intra prediction mode having an index that is greater than or smaller than an index of the first intra prediction mode, and
wherein an offset between indexes of the first intra prediction mode and the second intra prediction mode is greater than or equal to 2.