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

Claim 17:
18. The decoder according to claim 13, wherein when the intra prediction instructions are executed, the processor is caused to: 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, determine 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, determine 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, determine 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, determine 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.