PROCESSING BIDIRECTIONAL OPTICAL FLOW (BIO) ENCODING TOOL FOR RESAMPLING REFERENCE IMAGE WHEN ENCODING VIDEO Russian patent published in 2024 - IPC H04N19/00 

FIELD: video encoding.

SUBSTANCE: decoding method includes determining, by a video decoder, whether the resolution of the decoded current image matches the resolution of reference images identified by a reference image list associated with the current image; enabling, by the video decoder, a bidirectional optical flow (BDOF) for the current block of the current image when the resolution of the current image is determined to match the resolution of each of the reference images; disconnection by the video decoder BDOF for the current block of the current image, when the resolution of the current image is determined as different from the resolution of any of the reference images, and updating, by the video decoder, motion vectors corresponding to the current block using BDOF when BDOF is enabled for the current block.

EFFECT: improved degree of video compression with minimum losses in image quality.

16 cl, 13 dwg