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

Claim 5:
6. The method according to claim 1, wherein in case that width of the current block is greater than height of the current block and a width to height ratio is greater than or equal to 2:
when the width to height ratio is 2 and the first intra prediction mode index is less than 8, determining the second intra prediction mode index based on a sum of the first intra prediction mode index and the first preset value 65;
when the width to height ratio is 4 and the first intra prediction mode is less than 12, determining the second intra prediction mode index based on the sum of the first intra prediction mode index and the first preset value 65;
when the width to height ratio is 8 and the first intra prediction mode is less than 14, determining the second intra prediction mode index based on the sum of the first intra prediction mode index and the first preset value 65;
when the width to height ratio is 16 and the first intra prediction mode is less than 16, determining the second intra prediction mode index based on the sum of the first intra prediction mode index and the first preset value 65;
wherein a range of the second intra prediction mode index is 8 to 80.