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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

As each construction unit shown in FIG. 2 is independently shown to represent different characteristic functions in a decoding device, it may mean that each construction unit is configured with a separated hardware. But, as each construction unit is included by being enumerated as each construction unit for convenience of description, at least two construction units among each construction unit may be combined to configure one construction unit or one construction unit may be divided into a plurality of construction units to perform a function and such an integrated embodiment and separated embodiment of each construction unit are also included in a scope of a right of the present disclosure as long as they are not beyond the essence of the present disclosure.

An entropy decoding unit 210 may perform entropy decoding for an input bitstream. For example, for entropy decoding, various methods such as Exponential Golomb, CAVLC(Context-Adaptive Variable Length Coding) and CABAC(Context-Adaptive Binary Arithmetic Coding) may be applied.

In an entropy decoding unit 210, information related to intra prediction and inter prediction performed in an encoding device may be decoded.

A rearrangement unit 215 may perform rearrangement for a bitstream entropy-decoded in an entropy decoding unit 210. Coefficients represented in a one-dimensional vector shape may be rearranged by reconstructing into coefficients in a two-dimensional block shape. In a rearrangement unit 215, information related to coefficient scanning performed in an encoding device may be provided and rearrangement may be performed in an inverse scanning method based on a scanning order performed in the corresponding encoding device.

權(quán)利要求

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