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Video encoding/decoding method and device

專利號
US11659163B2
公開日期
2023-05-23
申請人
INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY（KR Seoul）
發(fā)明人
Jong Ki Han; Sang Guk Cha; Geon Won Lee; Geun Bae Kim
IPC分類
H04N19/159; H04N19/105; H04N19/176; H04N19/46
技術(shù)領(lǐng)域
mpm,prediction,candidate,mode,intra,may,group,be,block,unit
地域： Seoul

摘要

A video encoding/decoding device according to the present invention may determine an intra prediction mode of a current block on the basis of a most probable mode (MPM) of the current block or an intra prediction mode of a neighboring block, determine a reference region for intra prediction of the current block, and perform intra prediction on the current block by using the intra prediction mode and the reference region.

說明書

A decoding device may obtain remaining mode information through a bitstream. An intra prediction mode of a current block may be decoded based on the remaining mode information. The decoding may be performed based on at least one of the number of the second candidate group, an arrangement position of a second candidate group within the non-MPM or a value of remaining mode information. Also, the decoding may further include a process in which the MPM/the second candidate group are arranged in an ascending order and compared as shown in FIG. 6.

In an example, it is assumed that the number of the second candidate group is 5 and a second candidate group is positioned behind a third candidate group.

If the remaining mode information has a value of 56 to 60, a decoding device may determine an intra prediction mode corresponding to a value of the remaining mode information. The determined intra prediction mode may be set as an intra prediction mode of a current block.

權(quán)利要求

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