Patent ID: 11936909
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 10:
11. A prediction method, which is applied to a decoder and comprises:
determining a spatial block in which a decoding point is located;
parsing an attribute bitstream to obtain a value of a first colour component and an initial residual of the decoding point, and a first model parameter and a second model parameter corresponding to the spatial block;
constructing a prediction model according to the first model parameter and the second model parameter, wherein the prediction model is used for characterizing a predicted relationship between the first colour component and a second colour component of the decoding point;
obtaining a prediction value of the second colour component of the decoding point by using the prediction model and the value of the first colour component;
performing Level of Detail (LOD) partitioning and lifting inverse transform on the initial residual obtained by the parsing to determine a residual of the decoding point; and
calculating a reconstructed value of the second colour component of the decoding point based on the residual of the decoding point and the prediction value of the second colour component.