白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

Motion compensation method and device using bidirectional optical flow

專(zhuān)利號(hào)
US11800145B2
公開(kāi)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(lèi)
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(shuō)明書(shū)

When the size of the current block is sufficiently small, the motion vector of the current block is likely to have a value substantially similar to the pixel-based or subblock-based BIO, and thus the compensation effect obtained by performing BIO may be small. In this case, decrease in complexity obtained by skipping the BIO is likely to be a greater benefit than precision loss due to skipping the BIO.

As described above, the motion vector of the current block may be encoded in a merge mode or in a mode for encoding a motion vector difference. When the motion vector of the current block is encoded in the merge mode, the motion vector of the current block is merged with the motion vector of a neighboring block. That is, the motion vector of the current block is set to equal to the motion vector of the neighboring block. In this case, an additional compensation effect may be obtained through the BIO.

Accordingly, in the present embodiment, the BIO process is skipped based on at least one of the size of the current block or the mode information indicating the encoding mode of the motion vector.

FIG. 14 is an exemplary diagram illustrating a procedure of performing motion compensation by selectively applying the BIO process based on the size of the current block and an encoding mode of the motion vector according to an embodiment of the present disclosure. Although FIG. 14 illustrates that both the size of the current block and the encoding mode of the motion vector are used to determine whether to skip BIO is determined, using any one thereof is also within the scope of the present disclosure.

權(quán)利要求

1
微信群二維碼
意見(jiàn)反饋