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：US12081807B2

公开(公告)日：2024-09-03

申请号：US17482006

申请日：2021-09-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao

IPC: H04N19/96 ,  H04N19/122 ,  H04N19/14 ,  H04N19/184 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/122 ,  H04N19/14 ,  H04N19/184 ,  H04N19/70

Abstract: A method of decoding includes partitioning a rectangular transform tree node (TTN) using either a vertical binary tree split or a horizontal binary tree split to generate square child TTNs when a maximum transform unit (TU) size for the TTN is smaller than either dimension of the TTN. The method further includes partitioning the child TTNs using a quadtree split to generate transform units (TUs) when the first child TTN dimension and the second child TTN dimension are larger than the maximum TU size, determining that the child TTNs are TUs when the first child TTN dimension and the second child TTN dimension are less than or equal to the maximum TU size, applying the TUs to transform coefficients to generate residuals, and generating a reconstructed block based on the residuals.

公开(公告)号：US20240129455A1

公开(公告)日：2024-04-18

申请号：US18395726

申请日：2023-12-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lu Yu ,  Xuguang Zuo ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/503 ,  H04N19/58

CPC classification number: H04N19/105 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/503 ,  H04N19/58 ,  G06V20/46

Abstract: A picture encoding/decoding method and a related apparatus are provided. The picture decoding method includes obtaining a current picture from a video, the current picture being segmented using random access points into multiple video segments supporting a random access function; selecting, from a knowledge base, K reference pictures of the current picture, wherein at least one reference picture in the knowledge base does not belong to a random access segment in which the current picture is located, the random access segment comprising a picture sequence arranged in a decoding order from a closest random access point before the current picture to a closest random access point after the current picture; and decoding the current picture according to the K reference pictures.

公开(公告)号：US11917152B2

公开(公告)日：2024-02-27

申请号：US17742903

申请日：2022-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/61 ,  H04N19/12 ,  H04N19/147 ,  H04N19/176 ,  H04N19/625 ,  H04N19/96

CPC classification number: H04N19/12 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625 ,  H04N19/96

Abstract: A mechanism for position dependent spatial varying transform (SVT) for video coding. A prediction block and a corresponding transformed residual block are received at a decoder. A type of spatial varying transform (SVT) employed to generate the transformed residual block is determined. A position of the SVT relative to the transformed residual block is also determined. An inverse of the SVT is applied to the transformed residual block to reconstruct a reconstructed residual block. The reconstructed residual block is then combined with the prediction block to reconstruct an image block.

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：US20240029406A1

公开(公告)日：2024-01-25

申请号：US18481096

申请日：2023-10-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Viacheslav Khamidullin ,  Haitao Yang

IPC: G06V10/77 ,  G06V10/82 ,  G06V10/44 ,  G06V10/774 ,  G06V10/776

CPC classification number: G06V10/7715 ,  G06V10/82 ,  G06V10/44 ,  G06V10/774 ,  G06V10/776

Abstract: An image processing method includes: obtains a to-be-processed image, performs feature extraction on the to-be-processed image by using a feature extraction layer included in a convolutional neural network, to obtain a first feature map, and compresses the first feature map by using a feature compression layer included in the convolutional neural network, to obtain a second feature map, where a channel quantity of the second feature map is less than a channel quantity of the first feature map; and the sending node sends the second feature map to a receiving node. The first feature map of the to-be-processed image is obtained through extraction by using the feature extraction layer, and the first feature map is compressed by using the feature compression layer, to obtain the second feature map.

公开(公告)号：US11831871B2

公开(公告)日：2023-11-28

申请号：US17724841

申请日：2022-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Yin Zhao ,  Sergey Yurievich Ikonin ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/176 ,  H04N19/186 ,  H04N19/159

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: Apparatuses and methods for Intra Sub-Partitions (ISP) are provided. The method includes: obtaining information of ISP, and determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled. The first condition includes the information of ISP indicates that ISP is used for splitting the luma coding block. SubWidthC and SubHeightC are variables depending on chroma format information. The chroma format information indicates a chroma format of a picture the coding unit belongs to. The method can apply to all chroma format. The chroma format includes at least one of: 4:2:0, or 4:2:2, or 4:4:4. An accurate and versatile way to determine the size of the chroma transform block for the ISP is achieved.

公开(公告)号：US11750807B2

公开(公告)日：2023-09-05

申请号：US17399679

申请日：2021-08-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Yin Zhao ,  Sergey Yurievich Ikonin ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/176 ,  H04N19/186 ,  H04N19/159

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: Apparatuses and methods for Intra Sub-Partitions (ISP) are provided. The method includes: obtaining information of ISP, and determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled. The first condition includes the information of ISP indicates that ISP is used for splitting the luma coding block. SubWidthC and SubHeightC are variables depending on chroma format information. The chroma format information indicates a chroma format of a picture the coding unit belongs to. The method can apply to all chroma format. The chroma format includes at least one of: 4:2:0, or 4:2:2, or 4:4:4. An accurate and versatile way to determine the size of the chroma transform block for the ISP is achieved.

公开(公告)号：US20230239500A1

公开(公告)日：2023-07-27

申请号：US18191367

申请日：2023-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Nan Song ,  Xu Chen ,  Xiang Ma ,  Huanbang Chen ,  Yin Zhao

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/42 ,  H04N19/172 ,  H04N19/136 ,  G06N3/08

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/42 ,  H04N19/172 ,  H04N19/136 ,  G06N3/08

Abstract: An intra prediction method includes obtaining respective intra prediction modes or texture distributions of P reconstructed picture blocks in a surrounding region of a current block; obtaining, based on the respective intra prediction modes or texture distributions of the P reconstructed picture blocks, Q priori candidate intra prediction modes of the current block and Q probability values; obtaining, based on M probability values corresponding to M priori candidate intra prediction modes, M weighting factors corresponding to the M priori candidate intra prediction modes; separately performing intra prediction based on the M priori candidate intra prediction modes to obtain M predicted values; and obtaining a predicted value of the current block based on a weighted summation of the M predicted values and the corresponding M weighting factors.

公开(公告)号：US20230209053A1

公开(公告)日：2023-06-29

申请号：US18171596

申请日：2023-02-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao ,  Semih Esenlik

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/169 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/96

Abstract: A method of decoding a coded video bitstream implemented by a video decoder. The method includes determining a split mode for a coding tree unit (CTU) in an encoded bitstream, where the split mode is one of triple tree (TT), vertical binary tree (BT), and horizontal BT; marking a coding unit (CU) from the CTU as not to be predicted by intra prediction when one of three conditions is met; parsing the encoded bitstream to obtain a prediction unit and residual information for the CU from the CTU; and reconstructing the CU based on the prediction unit and the residual information when the CU has been marked.