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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
技術領域
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

ALF (Adaptive Loop Filter) may be performed based on a value obtained by comparing a filtered reconstructed image with an original image. Pixels included in an image may be divided into a predetermined group, one filter to be applied to the corresponding group may be determined and filtering may be performed discriminately per group. Information related to whether ALF is applied may be transmitted per coding unit (CU) for a luma signal and a shape and a filter coefficient of an ALF filter to be applied may be different according to each block. In addition, an ALF filter of the same shape (fixed shape) may be applied regardless of a feature of a target block to be applied.

A memory 155 may store a reconstructed block or picture calculated in a filter unit 150 and a stored reconstructed block or picture may be provided to a prediction unit 120 and 125 when inter prediction is performed.

FIG. 2 shows a rough block diagram of an decoding device as an embodiment of the present disclosure.

In reference to FIG. 2, a decoding device 200 may include an entropy decoding unit 210, a rearrangement unit 215, a dequantization unit 220, an inverse transform unit 225, a prediction unit 230 and 235, a filter unit 240 and a memory 245.

權利要求

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