IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING DEVICE, IMAGE DECODING DEVICE AND IMAGE CODING AND DECODING DEVICE Russian patent published in 2023 - IPC H04N19/70 H04N19/13 H04N19/91 

FIELD: means for image encoding and decoding.

SUBSTANCE: SAO type parameter is decoded from the bit stream using bypass arithmetic decoding with constant probability, wherein the SAO type parameter indicates whether the SAO value is a boundary offset value or a range offset value, and the SAO value is to be added to the pixel value of the reconstructed image. A plurality of bins is decoded from the bit stream using constant probability bypass arithmetic decoding, wherein the plurality of bins is an integer indicating the magnitude of the SAO value. An integer indicating the magnitude of the SAO value is determined based on the set of bins decoded using constant probability bypass arithmetic coding. The value of SAO is determined using the decoded SAO type parameter and said specific integer.

EFFECT: increase in efficiency of image encoding.

2 cl, 38 dwg