IMAGE PROCESSING DEVICE AND METHOD Russian patent published in 2020 - IPC H04N19/117 H04N19/80 H04N19/86 

FIELD: encoding and decoding of images.

SUBSTANCE: image processing device comprises a decoding unit configured to generate a decoded image by decoding an encoded stream; and a filter unit configured to apply unlocking filtering to neighboring pixels adjacent to the boundary between blocks in the decoded image formed by the decoding unit, using a filter parameter set in accordance with a range, including a value greater than 9 and a corresponding quantisation parameter greater than or equal to 45 in the ratio between the quantisation parameter and the filter parameter, set when selecting an unlocking filter force or limiting filtered pixels after an unlocking filter. Present invention can be used, for example, in image processing devices.

EFFECT: technical result consists in block noise suppression.

24 cl, 66 dwg