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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

[ Equation ? 5 ]

Here, since s2=s4, s4 is replaced by s2.

By solving Equation 4, which is the system of equations, vx and vy may be estimated. For example, using Cramer's rule, vx and vy may be derived as Equation 6.

v x ( i , j ) = - s 3 ? s 5 - s 2 ? s 6 s 1 ? s 5 - s 2 2 ? v y

權(quán)利要求

1
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