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Motion compensation method and device using bidirectional optical flow

專利號(hào)
US11800145B2
公開日期
2023-10-24
申請(qǐng)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

FIG. 14 is an exemplary diagram illustrating a procedure of performing motion compensation by selectively applying the BIO process based on the size of a current block and an encoding mode of a motion vector according to an embodiment of the present disclosure;

FIG. 15 is an exemplary diagram illustrating a procedure of performing motion compensation by selectively applying the BIO process based on a CVC condition and a BCC condition according to an embodiment of the present disclosure; and

FIG. 16 is an exemplary diagram illustrating a procedure of performing motion compensation by selectively applying the BIO process based on a motion vector variance of neighboring blocks according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements in the respective drawings, like reference numerals designate like elements, although the elements are shown in different drawings. Further, in the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

權(quán)利要求

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