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Video encoding/decoding method and device

專(zhuān)利號(hào)
US11659163B2
公開(kāi)日期
2023-05-23
申請(qǐng)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(lèi)
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(shuō)明書(shū)

(1) When Both intraPredModeL and intraPredModeA are Directional Modes, intraPredModeL is Greater than intraPredModeA and a Difference Between intraPredModeL and intraPredModeA is not 1 or 64

The MPM of a current block may include intraPredModeL, intraPredModeA, a default mode, a mode derived by subtracting 1 from intraPredModeL and a mode derived by adding 1 to intraPredModeL. An index may be assigned to the MPM based on a predetermined priority. For example, an index may be assigned to each MPM as in the following Table 2. But, a priority of the present disclosure is not limited to Table 2 and a position of a MPM in a candidate mode list may be different from Table 2.

TABLE 2 mpm[0] intraPredModeL mpm[1] intraPredModeA mpm[2] PLANAR mpm[3] DC mpm[4] 2 + ((intraPredModeL + 62)%65) mpm[5] 2 + ((intraPredModeL ? 1)%65)

權(quán)利要求

1
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