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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

mpm[2] DC mpm[3] 2 + ((intraPredModeX + 62)%65) mpm[4] 2 + ((intraPredModeX ? 1)%65) mpm[5] 2 + ((intraPredModeX + 61)%65)
(7) When Both intraPredModeL and intraPredModeA are Nondirectional Modes

The MPM of a current block may include a default mode, a horizontal mode (intraPredModeH), and a vertical mode (intraPredModeV). In addition, the MPM of a current block may additionally include at least one of a mode derived by subtracting or adding 1 from or to intraPredModeH or a mode derived by subtracting or adding 1 from or to intraPredModeV.

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 8. But, a priority of the present disclosure is not limited to Table 8 and a position of a MPM in a candidate mode list may be different from Table 8.

TABLE 8 mpm[0] PLANAR mpm[1] DC mpm[2] 2 + ((intraPredModeH + 62)%65)

權(quán)利要求

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