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Video encoding/decoding method and device

專利號(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
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

Alternatively, a second candidate group may be rearranged to be positioned before a third candidate group. Through it, an intra prediction mode corresponding to a second candidate group may be encoded with a codeword which is shorter than a third candidate group. In other words, an intra prediction mode corresponding to a second candidate group may be encoded with a short codeword and a third candidate group may be encoded with a relatively long codeword.

In the above-described embodiment, only some of a third candidate group may be selectively arranged before or behind a second candidate group. For example, some of the third candidate group may mean a mode whose mode value is an even number or may mean a mode whose mode value is an odd number among intra prediction modes included in a third candidate group.

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