公开(公告)号：US10455236B2

公开(公告)日：2019-10-22

申请号：US16394763

申请日：2019-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/59 ,  H04N19/186 ,  H04N19/593 ,  H04N19/176 ,  H04N19/105 ,  H04N19/14

Abstract: An intra-frame decoding method is provided. The method includes: obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US11375205B2

公开(公告)日：2022-06-28

申请号：US17104894

申请日：2020-11-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US10855993B2

公开(公告)日：2020-12-01

申请号：US16598765

申请日：2019-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

Abstract: A chroma component prediction method, comprising obtaining reference samples of a current block, wherein the reference samples comprise a luma reference sample array and a chroma reference sample array, obtaining a correlation parameter based on the luma reference sample array and the chroma reference sample array, and calculating a prediction value of a chroma component of the current block based on a luma component of the current block and the correlation parameter, wherein the reference samples comprise samples on top of the current block and on a top right of the current block, or the reference samples comprise samples on a left of the current block and on a bottom left of the current block.

公开(公告)号：US20200068203A1

公开(公告)日：2020-02-27

申请号：US16598765

申请日：2019-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/593 ,  H04N19/59 ,  H04N19/186 ,  H04N19/176 ,  H04N19/105 ,  H04N19/14

Abstract: A chroma component prediction method, comprising obtaining reference samples of a current block, wherein the reference samples comprise a luma reference sample array and a chroma reference sample array, obtaining a correlation parameter based on the luma reference sample array and the chroma reference sample array, and calculating a prediction value of a chroma component of the current block based on a luma component of the current block and the correlation parameter, wherein the reference samples comprise samples on top of the current block and on a top right of the current block, or the reference samples comprise samples on a left of the current block and on a bottom left of the current block.

公开(公告)号：US20180131944A1

公开(公告)日：2018-05-10

申请号：US15862240

申请日：2018-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/593 ,  H04N19/59 ,  H04N19/105 ,  H04N19/176 ,  H04N19/14 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block; determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.