公开(公告)号：US20220329795A1

公开(公告)日：2022-10-13

申请号：US17734829

申请日：2022-05-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN ,  Lian ZHANG

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

Abstract: A picture partitioning method and apparatus are described. The method includes determining a split mode of a current node, where the current node includes a luma block and a chroma block. The method further includes determining, based on the split mode of the current node and a size of the current node, that the chroma block of the current node is not further split. In accordance with the chroma block of the current node not being further split, the method includes splitting the luma block of the current node based on the split mode of the current node. In accordance with the chroma block of the current node not being further split, the method may be used to split only the luma block of the current node, thereby improving encoding and decoding efficiency, reducing a maximum throughput of a codec, and facilitating implementation of the codec.

公开(公告)号：US20210321101A1

公开(公告)日：2021-10-14

申请号：US17357684

申请日：2021-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao YANG ,  Yin ZHAO ,  Lian ZHANG

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/159 ,  H04N19/96

Abstract: This application discloses a prediction mode determining method and apparatus, an encoding device, and a decoding device. The method includes: determining a split mode for a current picture block; determining whether a first picture subblock that meets a preset condition is obtained after the current picture block is split in the split mode; if it is determined that the first picture subblock is obtained after the split, splitting the current picture block in the split mode to obtain a plurality of picture subblocks, where the plurality of picture subblocks include the first picture subblock; and determining that a same prediction mode is used for the plurality of picture subblocks, where the prediction mode for the plurality of picture subblocks is an intra prediction mode or an inter prediction mode. During implementation of this application, there is no need to parse all bitstreams, thereby facilitating hardware pipeline processing and improving efficiency.

公开(公告)号：US20210306643A1

公开(公告)日：2021-09-30

申请号：US17345295

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Riyang ZHAO ,  Zhongliang LI ,  Lian ZHANG

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/186 ,  H04N19/176

Abstract: Embodiments include a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments, video coding efficiency can be improved.

公开(公告)号：US20240291965A1

公开(公告)日：2024-08-29

申请号：US18649543

申请日：2024-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu CHEN ,  Huanbang CHEN ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: Embodiments of this application disclose a picture prediction method and apparatus. The picture prediction method includes: determining whether a merge mode is used for a current picture block; when the merge mode is used for the current picture block, determining whether a level-1 merge mode is available for the current picture block; when the level-1 merge mode is unavailable, and a high-layer syntax element corresponding to a first merge mode indicates that the first merge mode is forbidden to be used, determining a second merge mode as a target merge mode used for the current picture block, where the first merge mode and the second merge mode are included in a level-2 merge mode; and predicting the current picture block based on the target merge mode. In the embodiments of this application, redundancy generated in a merge mode determining process can be reduced as much as possible.

公开(公告)号：US20240205419A1

公开(公告)日：2024-06-20

申请号：US18430963

申请日：2024-02-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Riyang ZHAO ,  Zhongliang LI ,  Lian ZHANG

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186

Abstract: Embodiments of this application disclose a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments of this application, video coding efficiency can be improved.

公开(公告)号：US20230039840A1

公开(公告)日：2023-02-09

申请号：US17954861

申请日：2022-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao YANG ,  Lian ZHANG ,  Xiang MA

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H04N19/176

Abstract: The present application disclose a picture processing method and apparatus, which are applicable to a video picture processing scenario. The method includes: obtaining at least two transform coefficient blocks, where each of the at least two transform coefficient blocks includes at least two transform coefficients that correspond to different frequency points; determining, according to a preset frequency point scanning order, the transform coefficients that are in the at least two transform coefficient blocks and that correspond to a selected frequency point; and encoding, according to a preset coefficient scanning order, each transform coefficient corresponding to the selected frequency point, to obtain picture encoded information.

公开(公告)号：US20210360275A1

公开(公告)日：2021-11-18

申请号：US17389873

申请日：2021-07-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao YANG ,  Fan MU ,  Xiang MA ,  Huanbang CHEN ,  Lian ZHANG

IPC: H04N19/51 ,  H04N19/159 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176

Abstract: The inter prediction method is provided, which includes: obtaining a predicted sample value of a current affine block; determining one or more luminance compensation blocks based on motion vectors of one or more subblocks of the current affine block; determining a linear model coefficient based on a first sample set and a second sample set, where the first sample set includes at least one reconstructed sample neighboring to an edge of the current affine block, the second sample set includes at least one reconstructed sample neighboring to an edge of the one or more luminance compensation blocks, and the sample in the first sample set is in a one-to-one correspondence with the sample in the second sample set; and updating the predicted sample value of the current affine block based on the linear model coefficient, to obtain an updated predicted sample value of the current affine block.

公开(公告)号：US20210344899A1

公开(公告)日：2021-11-04

申请号：US17374004

申请日：2021-07-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Yin ZHAO ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/103 ,  H04N19/50 ,  H04N19/96

Abstract: This application discloses a processing method applied to video encoding or video decoding. The method includes: obtaining size information of a current block; determining a context model index ctxInc of a flag of the current block based on the obtained size information of the current block and a size-based constraint; and performing subsequent processing based on the context model index ctxInc of the flag of the current block. The method can be used to improve coding efficiency.

公开(公告)号：US20210337189A1

公开(公告)日：2021-10-28

申请号：US17369703

申请日：2021-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/107 ,  H04N19/96 ,  H04N19/61 ,  H04N19/70 ,  H04N19/124

Abstract: A prediction mode determining method and apparatus are described. A prediction mode status of a child node of a target node is determined based on an area and a split manner of the target node, where the prediction mode status includes intra prediction mode only and inter prediction mode only. Further, a prediction mode of the child node is determined based on the prediction mode status of the child node. In this way, a same prediction mode is used for all child nodes obtained by splitting the target node. This facilitates pipeline processing of hardware, increases a subsequent processing speed, and improves video coding efficiency.

公开(公告)号：US20210329289A1

公开(公告)日：2021-10-21

申请号：US17357555

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/53 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/523

Abstract: An inter prediction method is provided, including: when a prediction mode of a to-be-processed picture block is an affine motion model-based advanced motion vector prediction mode (S901), obtaining control point motion vectors of the to-be-processed picture block (S902), where the control point motion vectors meet preset first motion vector resolution and/or first motion vector bit depth; then, deriving a motion vector of each motion compensation unit in the to-be-processed picture block based on the control point motion vectors (S903); and obtaining a reconstructed block of the to-be-processed picture block based on the motion vector of each motion compensation unit (S904).