IMAGE OR VIDEO ENCODING BASED ON PALETTE MODE Russian patent published in 2024 - IPC H04N19/186 H04N19/124 H04N19/11 H04N19/70 

FIELD: video or image encoding.

SUBSTANCE: invention relates to video or image encoding, in particular to a palette mode based encoding method. It is proposed that a quantisation parameter used in a process of scaling a quantised transition value in a palette mode, can be output based on information of minimum quantization parameter related to conversion skipping mode, wherein the information on the minimum quantisation parameter for the transform skip mode is a syntax element obtained from a sequence parameter set (SPS) included in the image information. Accordingly, the amount of data required for signalling for video/image coding can be reduced, and transition coding in palette mode can be efficiently performed.

EFFECT: improved encoding efficiency for screen content, such as computer-generated video, which contains a significant amount of text and graphics.

3 cl, 11 dwg, 18 tbl