BDOF-based inter prediction method and device

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United States of America Patent

PATENT NO 11876972
SERIAL NO

17943537

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Abstract

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An image decoding method includes: deriving an L0 motion vector and a L1 motion vector of the current block; deriving prediction samples of the current block based on the L0 motion vector and the L1 motion vector; and generating reconstructed samples of the current block based on the prediction samples. Deriving the prediction samples includes applying bi-directional optical flow (BDOF) to the current block based on whether the condition for applying BDOF to the current block is satisfied, and the application condition of the BDOF includes a condition whereby the values of L0 luma weighted prediction flag information and L1 luma weighted prediction flag information are both zero, where the a value of each of the L0 luma weighted prediction flag information and L1 luma weighted prediction flag information being 0 represents that a weight factor for each of a L0 and L1 prediction luma components does not exist, respectively.

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Patent Owner(s)

  • LG ELECTRONICS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jang, Hyeongmoon Seoul, KR 223 864
Nam, Junghak Seoul, KR 284 1146
Park, Naeri Seoul, KR 224 1304

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