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Motion compensation method and device using bidirectional optical flow

專利號
US11800145B2
公開日期
2023-10-24
申請人
SK TELECOM CO., LTD.(KR Seoul)
發(fā)明人
Jeong-yeon Lim; Hyo Song Kim; Hyeong-duck Kim; Se-hoon Son; Jae-seob Shin; Gyeong-taek Lee; Sun-young Lee
IPC分類
H04N19/52; H04N19/105; H04N19/14; H04N19/176
技術(shù)領(lǐng)域
motion,block,bio,prediction,vector,current,picture,vy,in,subblock
地域: Seoul

摘要

Disclosed herein is a method for adaptive bidirectional optical flow estimation for inter-screen prediction compensation during video encoding. The method aims to reduce complexity and/or cost of bidirectional optical flow (BIO) at a pixel level or a subblock level.

說明書

Substituting the horizontal optical flow vx and the vertical optical flow vy calculated in this way into Equation 11 produces a prediction block of the current block. When the horizontal optical flow is skipped, vx=0 in Equation 11, and therefore the horizontal optical flow vx does not contribute to generating the prediction block. Similarly, when the vertical optical flow is skipped, vy=0, and therefore the vertical optical flow vy does not contribute to generating the prediction block. When both the horizontal and vertical optical flows are skipped, vx=0 and vy=0, and therefore a prediction block is generated by averaging the first reference block and the second reference block. That is, the prediction block is generated through typical motion compensation.

權(quán)利要求

1
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