IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD AND IMAGE DECODING METHOD Russian patent published in 2019 - IPC H04N19/50 H04N19/159 G06T9/00 

FIELD: data processing.

SUBSTANCE: invention relates to the images encoding and decoding means. Selecting the encoding mode for each of the encoding blocks obtained by the encoding block hierarchical division, having a maximum size, which is the encoding process unit. Performing the internal prediction or external prediction with respect to each of the said encoding blocks in order to generate the internal prediction image or the external prediction image according to the said encoding mode. Performing the code variable-length encoding with respect to the internal prediction parameter, used for the said internal prediction performance in order to generate the encoded data.

EFFECT: increase in the encoding and decoding efficiency with increase in the directional prediction modes number without increase in the computations amount.

4 cl, 14 dwg