Patent ID: 11962802
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The method according to claim 1, wherein in case that the height of the current block is greater than the width of the current block and the height to width ratio is greater than or equal to 2:
when the height to width ratio is 2 and the first intra prediction mode index is greater than 60, determining the second intra prediction mode index based on a difference between the first intra prediction mode index and the second preset value 67;
when the height to width ratio is 4 and the first intra prediction mode index is greater than 58, determining the second intra prediction mode index based on the difference between the first intra prediction mode index and the second preset value 67;
when the height to width ratio is 8 and the first intra prediction mode index is greater than 56, determining the second intra prediction mode index based on the difference between the first intra prediction mode index and the second preset value 67;
when the height to width ratio is 16 and the first intra prediction mode index is greater than 54, determining the second intra prediction mode index based on the difference between the first intra prediction mode index and the second preset value 67;
wherein a range of the second intra prediction mode index is −14 to 60.