IMAGE ENCODING METHOD BASED ON TRANSFORMATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC H04N19/60 H04N19/645 H04N19/70 

FIELD: image encoding.

SUBSTANCE: processor can be configured to derive a transformation ratio for a current block based on the residual information, to determine whether a significant ration occurs in the second region that excludes the top-left first region of the current block, to obtain, by parsing, an MTS index from a bitmap flow if the significant ratio is not in the second region, and to derive the residual sample by applying the MTS core derived from the MTS index to the transformation ratios of the first region.

EFFECT: increase of the efficiency of video encoding.

12 cl, 23 dwg, 20 tbl