公开(公告)号：US12160566B2

公开(公告)日：2024-12-03

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 ,  G06T9/40 ,  H04N19/124 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

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：US20240348786A1

公开(公告)日：2024-10-17

申请号：US18630457

申请日：2024-04-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

公开(公告)号：US20240297993A1

公开(公告)日：2024-09-05

申请号：US18412588

申请日：2024-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao Yang ,  Yin Zhao ,  Lian Zhang

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

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

Abstract: A prediction mode determining 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, splitting the current picture block in the split mode to obtain a plurality of picture subblocks in response to determining that the first picture subblock is obtained after the current picture block is split, and determining that a same prediction mode is used for the plurality of picture subblocks. The plurality of picture subblocks comprise the first picture subblock. The prediction mode for the plurality of picture subblocks is an intra prediction mode or an inter prediction mode.

公开(公告)号：US12028527B2

公开(公告)日：2024-07-02

申请号：US17561070

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

公开(公告)号：US11895297B2

公开(公告)日：2024-02-06

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

Abstract: A prediction mode determining 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, splitting the current picture block in the split mode to obtain a plurality of picture subblocks in response to determining that the first picture subblock is obtained after the current picture block is split, and determining that a same prediction mode is used for the plurality of picture subblocks. The plurality of picture subblocks comprise the first picture subblock. The prediction mode for the plurality of picture subblocks is an intra prediction mode or an inter prediction mode.

公开(公告)号：US12058362B2

公开(公告)日：2024-08-06

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 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  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：US11985321B2

公开(公告)日：2024-05-14

申请号：US17561070

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder, a video decoder, and a corresponding method, where the method includes, when a plurality of preset conditions are satisfied, performing bi-directional optical flow (BDOF) processing on a current picture block to obtain a predicted sample value of the current picture block, where the plurality of preset conditions include at least a condition that a height (H) of the current picture block is greater than or equal to 8, a width (W) of the current picture block is greater than or equal to 8, and a product of W and H is greater than 128. Thus encoding/decoding complexity and prediction accuracy can be balanced to some extent.

公开(公告)号：US20240105193A1

公开(公告)日：2024-03-28

申请号：US18526406

申请日：2023-12-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jue Mao ,  Yin Zhao ,  Ning Yan ,  Haitao Yang ,  Lian Zhang ,  Jing Wang ,  Yibo Shi

IPC: G10L19/08

CPC classification number: G10L19/08

Abstract: This application provides picture or audio encoding and decoding methods and apparatuses, and relates to the field of artificial intelligence (AI)—based picture or audio encoding and decoding technologies, and specifically, to the field of neural network-based picture feature map or audio feature variable encoding and decoding technologies. The encoding method includes: obtaining a to-be-encoded target, where the to-be-encoded target includes a plurality of feature elements, and the plurality of feature elements include a first feature element. The method further includes: obtaining a probability estimation result of the first feature element; determining, based on the probability estimation result of the first feature element, whether to perform entropy encoding on the first feature element; and performing entropy encoding on the first feature element only when it is determined that entropy encoding needs to be performed on the first feature element.

公开(公告)号：US11736706B2

公开(公告)日：2023-08-22

申请号：US17357473

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/44 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96

Abstract: A video decoding method includes: obtaining block information of a current picture block; determining, based on the block information, whether a split mode of a set of optional split modes is available; determining a split mode of the current picture block from a determined available split mode; obtaining at least one coding unit (CU) from the current picture block based on the split mode of the current picture block, and parsing a bitstream including the current picture block, to obtain decoding information of the at least one CU, and decoding the at least one CU based on the decoding information, to obtain a reconstructed block.

公开(公告)号：US11601667B2

公开(公告)日：2023-03-07

申请号：US17337556

申请日：2021-06-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao Yang ,  Fan Mu ,  Lian Zhang ,  Xiang Ma

IPC: H04N11/02 ,  H04N19/51 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184

Abstract: This application provides an example inter prediction method and a related example apparatus. One example method includes parsing a bitstream to determine prediction information of a to-be-processed picture block, where the prediction information indicates that a prediction direction of the to-be-processed picture block is bidirectional prediction, where the bitstream does not include target identification information, and where the target identification information indicates to perform local illumination compensation (LIC) on the to-be-processed picture block; and obtaining a prediction value of the to-be-processed picture block based on the prediction information.