IMAGE CODING METHOD BASED ON TRANSFORMATION AND A DEVICE Russian patent published in 2023 - IPC H04N19/60 

FIELD: image coding.

SUBSTANCE: extracting the residual sample, wherein the step for extracting the residual sample comprises the following steps: extracting a nullable block for the current block; extracting a context model for position information of the last significant coefficient based on the width or height of the current block; extracting the position value of the last significant coefficient based on the context model; and extracting the position of the last significant coefficient based on the value of the position information of the last significant coefficient and the width or height of the nullable block.

EFFECT: increase in efficiency of image encoding.

10 cl, 13 dwg, 15 tbl