PALETTIZED PREDICTION AT ENCODING VIDEO BASED ON PALETTES Russian patent published in 2018 - IPC H04N19/70 

FIELD: physics.

SUBSTANCE: method of video data encoding is proposed, in which predictive palette is formed comprising a palette record that indicate pixel values; it is determined which of the palette records in the predictive palette must be copied to the current palette for the current video data block stored in the memory; one or more syntax elements is encoded indicating the number of new palette records that must be included in the current palette for the current block; one or more syntax elements is encoded indicating a pixel value for each of the new palette records that must be included in the current palette; the size of the current palette is calculated, equal to the sum of the number of the copied palette records and the number of new palette records; the current palette with is formed having the calculated size, which includes the copied palette and the new palette records, and the index values for one or more of the pixel values of the current block are determined, which identify the palette records in the current palette used to represent the pixel values of the current block.

EFFECT: increasing the efficiency of the screen content encoding.

22 cl, 9 dwg