IMAGE PROCESSING APPARATUS AND METHOD FOR EXECUTING EFFECTIVE BLOCKING REMOVAL Russian patent published in 2022 - IPC H04N19/82 H04N19/132 H04N19/117 H04N19/176 H04N19/86 

FIELD: image processing.

SUBSTANCE: first encoding block has a block size of S_A samples by N samples. Second encoding block has a block size of S_B samples by M samples. Decoding comprises filtration containing the stages wherein the values of no more than M_A samples of the first encoding block are modified as output values of the first filter, wherein no more than M_A samples are located in the row perpendicular to and adjacent to the edge of the block. The values of no more than M_B samples of the second encoding block are modified as output values of the second filter, wherein no more than M_B samples are located in the row perpendicular to and adjacent to the edge of the block, wherein M_A≠M_B. The values of no more than I_A samples of the first encoding block are used as the input values of the first filter to compute the output values of the first filter and/or the output values of the second filter, wherein no more than I_A samples are located in the row perpendicular to and adjacent to the edge of the block.

EFFECT: increase in the efficiency of removal of blocking due to the ensured flexible parallelisation of processing of asymmetric filtration for both edges of the blocks.

8 cl, 14 dwg