METHOD OF RECONSTRUCTED UNIT FORMATION Russian patent published in 2020 - IPC H04N19/107 H04N19/11 G06T9/00 

FIELD: calculating; counting.

SUBSTANCE: invention relates to the computer equipment. Image decoding method includes: obtaining intra prediction mode; generation of prediction unit; generating a residual block and generating the reconstructed unit; wherein residual unit is generated by quantized information reverse scanning by coefficient, wherein intraframe prediction mode obtaining is obtained by designing a group of most probable modes (MPM), including three intra-frame prediction modes, determined based on left intra-frame prediction mode and upper intra-frame prediction mode, by setting intra-frame prediction mode of MPM group determined by prediction mode index as intra prediction mode of current prediction unit, if the mode group indicator indicates the MPM group, determining the intra prediction mode of the current prediction block by comparing the prediction mode index with the three intra-frame prediction modes of the MPM group if the mode group indicator does not indicate the MPM group.

EFFECT: technical result is reduction of duration of internal prediction, as well as reduction of number of coding bits of residual block and alarm bits required for signalling of internal prediction mode.

9 cl, 10 dwg