IMAGE ENCODING DEVICE, IMAGE ENCODING METHOD AND COMPUTER-READABLE RECORDING MEDIUM, AS WELL AS IMAGE DECODING DEVICE, IMAGE DECODING METHOD AND COMPUTER-READABLE RECORDING MEDIUM Russian patent published in 2021 - IPC H04N19/119 H04N19/96 H04N19/192 

FIELD: physics.

SUBSTANCE: invention relates to the technology of dividing an image into blocks, as well as encoding and decoding images in units of blocks obtained by dividing said image. Disclosed is an image encoding device for dividing an image into blocks and encoding an image in unit units obtained as a result of dividing the image. Unit for blocks performs recursive division of image into rectangles of specified size and generation of target coding unit. Intra prediction unit performs generation of the predicted image signal using the encoded unit image signal adjacent to the target encoding unit. Encoding unit performs coding of information on division into blocks of target coding unit. Unit for blocks comprises: a unit for dividing into four units, performing separation of target unit in recursive division into four units in horizontal direction and vertical direction and generating four units; and a unit for dividing into two units, which separates the target unit during recursive separation into two units in a horizontal direction or vertical direction and generation of two units. In case previous recursive separation is division into two units, division unit into two units prohibits separation of target unit of current recursive separation in the same direction, in which this unit was divided at previous recursive division.

EFFECT: technical result consists in improved efficiency of coding.

6 cl, 22 dwg