Patent ID: 11871033
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A device, comprising:
one or more processors; and
a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions, which when executed by the one or more processors, cause the device to:
obtain an initial intra prediction mode of a chroma component of a picture;
derive a chroma intra prediction mode (intraPredModeC) from a look up table (LUT) by using the initial intra prediction mode of the chroma component, wherein a horizontal direction of the chroma component (SubWidthC) is different from a vertical direction of the chroma component (SubHeightC);
perform wide-angle mapping on the intraPredModeC to obtain a modified intraPredModeC;
obtain an angle parameter for the chroma component based on the modified intraPredModeC; and
obtain predicted samples of the chroma component based on the angle parameter.