METHOD AND DEVICE FOR MUTUAL FORECASTING BASED ON DVD AND BDOF Russian patent published in 2022 - IPC H04N19/577 H04N19/513 H04N19/132 

FIELD: imaging technology.

SUBSTANCE: invention relates to the field of image encoding, and more specifically to a method and equipment for performing mutual prediction based on the detailing of motion vectors on the side of the decoder (DMVR) and bidirectional optical flow (BDOF). A method for decoding images according to this document is proposed, which differs in that DMVR is used to extract detailed L0 and L1 motion vectors based on the L0 and L1 motion vectors of the current block; the forecast samples of the current block are extracted based on the forecast L0 samples extracted based on the detailed L0 motion vector and the forecast L1 samples extracted based on the detailed L1 motion vector; and reconstructive samples of the current block are formed based on forecast samples, while forecast L0 samples are extracted based on the reference L0 frame and the detailed L0 motion vector, forecast L1 samples are extracted based on the reference L1 frame and the detailed L1 motion vector, and at the stage for extracting forecast samples, whether or not apply the BDOF extraction process, is determined based on whether or not the first POC difference between the current frame and the reference L0 frame and the second POC difference between the current frame and the reference L1 frame are identical.

EFFECT: increase in the efficiency of encoding/decoding images.

14 cl, 12 dwg, 30 tbl