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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

Candidate mode 0 maxAB 1 2 + ((maxAB + 61)%64) 2 2 + ((maxAB ? 1)%64) 3 2 + ((maxAB + 60)%64) 4 2 + (maxAB %64)

Alternatively, when candIntraPredModeA and candIntraPredModeB are not the same and both candIntraPredModeA and candIntraPredModeB are nondirectional modes, a second candidate group may include at least one of a nondirectional mode, a vertical mode, a horizontal mode, (a vertical mode?m), (a vertical mode+m), (a horizontal mode?m) or (a horizontal mode+m). Herein, m may be an integer such as 1, 2, 3, 4, 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 12. An index in Table 12 specifies a position or a priority of a candidate mode, but is not limited thereto. For example, an index 1 may be assigned to a horizontal mode or the largest index may be assigned. In addition, a candidate mode may include at least one of a diagonal mode (e.g., a mode 2, a mode 34, a mode 66), (a diagonal mode?m) or (a diagonal mode+m).

TABLE 12 Index

權(quán)利要求

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