DERIVING CHROMA SAMPLE WEIGHT FOR GEOMETRIC SEPARATION MODE Russian patent published in 2024 - IPC H04N19/132 H04N19/105 H04N19/159 H04N19/186 H04N19/176 

FIELD: means for encoding images.

SUBSTANCE: parameter value for the current block is obtained, which indicates the partitioning mode for the current block. The first and the second prediction modes for the current block are obtained. First and second prediction values for the chrominance sample in the current block are generated according to the first and second prediction modes, respectively. A combined prediction value is obtained by combining the first prediction value and the second prediction value. Here, a weight value for the luma sample is obtained by calculating the weight value for the luma sample, and a first weight value for the chrominance sample is obtained by calculating the first weight value for the chroma sample. A combined prediction value for the chroma sample in the current block is obtained according to the first prediction value for the chroma sample and the first weight value for the chroma sample.

EFFECT: improved efficiency of image encoding.

13 cl, 20 dwg