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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

Alternatively, when candIntraPredModeA and candIntraPredModeB are not the same and both candIntraPredModeA and candIntraPredModeB are not nondirectional modes, a second candidate group may include at least one of candIntraPredModeA, candIntraPredModeB, (maxAB?n), (maxAB+n), (minAB?n), (minAB+n) or a nondirectional mode. Herein, maxAB and minAB may mean the maximum value and the minimum value of candIntraPredModeA and candIntraPredModeB, respectively, and n may be an integer such as 1, 2, or more. The nondirectional mode may include at least one of a Planar mode or a DC mode. In an example, a candidate mode of a second candidate group may be determined as in the following Table 10 based on a difference value (D) between candIntraPredModeA and candIntraPredModeB.

TABLE 10 Candidate Candidate Candidate Candidate mode mode mode mode Index (D = 1) (D = 2) (D >= 62) (Otherwise) 0 candIntraPredModeA candIntraPredModeA candIntraPredModeA

權(quán)利要求

1
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