公开(公告)号：US12175713B2

公开(公告)日：2024-12-24

申请号：US17576575

申请日：2022-01-14

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Feng Wu ,  Haichuan Ma ,  Dong Liu ,  Haitao Yang

IPC: G06T9/00 ,  G06T3/40

Abstract: The present disclosure provides an image decoding method based on a wavelet transform. The method includes: performing entropy decoding on the compressed bitstream to obtain a reconstructed wavelet coefficient; dequantizing the reconstructed wavelet coefficient to obtain a dequantized wavelet coefficient; and performing N inverse wavelet transforms on the dequantized wavelet coefficient based on the wavelet transform model to obtain a reconstructed image, where the wavelet transform model is implemented based on a convolutional neural network (CNN).

公开(公告)号：US12108048B2

公开(公告)日：2024-10-01

申请号：US18318731

申请日：2023-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Jianle Chen ,  Jiali Fu

IPC: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

Abstract: A motion vector prediction method includes parsing a bitstream to obtain an index value of a candidate motion vector list and constructing the candidate motion vector list that includes. candidate motion vectors of K control points of a current block. The candidate motion vectors of K control points are obtained based on a 2N-parameter affine transform model used for a neighboring block of the current block, where N and K are integers greater than or equal to 2 and less than or equal to 4 with N not being equal to K. The method further includes determining, in the candidate motion vector list, target candidate motion vectors of the K control points based on the index value and obtaining a predicted motion vector of each subblock of the current block based on the target candidate motion vectors of the K control points.

公开(公告)号：US12108046B2

公开(公告)日：2024-10-01

申请号：US17529106

申请日：2021-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Lian Zhang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: This application discloses an inter prediction method, where a to-be-processed block includes one or more subblocks, and the method includes: determining a temporal offset vector of the to-be-processed block based on a spatially neighboring block of the to-be-processed block, where the temporal offset vector is used to determine a collocated subblock of the subblock of the to-be-processed block; and determining a motion vector of the subblock of the to-be-processed block based on a motion vector of the collocated subblock, where the motion vector of the subblock of the to-be-processed block is obtained based on a first preset motion vector when the motion vector of the collocated subblock is unavailable. This application can improve prediction accuracy in coding and increase coding efficiency.

公开(公告)号：US12108040B2

公开(公告)日：2024-10-01

申请号：US17670622

申请日：2022-02-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang

IPC: H04N19/124 ,  H04N17/00 ,  H04N19/103 ,  H04N19/167 ,  H04N19/186 ,  H04N19/50

CPC classification number: H04N19/124 ,  H04N19/103 ,  H04N19/167 ,  H04N19/186 ,  H04N19/50

Abstract: This application discloses a quantization parameter (QP) setting method includes: determining that a current coding unit (CU) is a chroma CU; and separately performing the following processing on at least one luma CU: when the at least one luma CU has no residual, and both a previous luma CU and a luma-chroma CU that have been encoded before the at least one luma CU in the current quantization group (QG) have no residual, modifying a basic QP of the at least one luma CU to a predictive QP; setting a basic QP of the current CU to the basic QP of the at least one luma CU corresponding to the preset position of the current CU; and performing encoding processing on the current CU based on the basic QP of the current CU.

公开(公告)号：US20240305807A1

公开(公告)日：2024-09-12

申请号：US18670305

申请日：2024-05-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

Abstract: A video decoding method includes determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US20240223792A1

公开(公告)日：2024-07-04

申请号：US18602976

申请日：2024-03-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625

CPC classification number: H04N19/44 ,  H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625

Abstract: A video decoding method, including: parsing a received bitstream to obtain prediction information of a coding unit (CU); obtaining a target transform mode of a residual transform unit (TU); parsing the received bitstream to obtain transform coefficients of the residual TU; applying an inverse quantization to the transform coefficients of the residual TU to obtain dequantized coefficients; applying, based on the target transform mode, an inverse transform to the dequantized coefficients to obtain a residual block of the residual TU; obtaining a prediction block of the CU based on the prediction information; obtaining a video block based on the residual block and the prediction block; and outputting a video sequence including a video frame that includes the video block.

公开(公告)号：US20240223790A1

公开(公告)日：2024-07-04

申请号：US18426805

申请日：2024-01-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Yin Zhao ,  Lian Zhang

IPC: H04N19/44 ,  H04N19/13 ,  H04N19/85

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/85

Abstract: A decoding method includes decoding a bitstream to obtain a first feature map, where a resolution of the first feature map is lower than a resolution of an original picture; and reconstructing a second feature map based on a first neural network, to obtain a reconstructed picture, where a resolution of the second feature map and a resolution of the reconstructed picture each are a target resolution, the target resolution is lower than the resolution of the original picture, and the second feature map is the first feature map, or the second feature map is a feature map obtained by processing the first feature map based on a second neural network.

公开(公告)号：US12022100B2

公开(公告)日：2024-06-25

申请号：US18166890

申请日：2023-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44 ,  H04N19/625

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

Abstract: A video decoding method includes: determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US12022081B2

公开(公告)日：2024-06-25

申请号：US17514289

申请日：2021-10-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/96

Abstract: Embodiments of this application disclose an intra prediction method for a video sequence. The method includes: obtaining a size and a split mode of a chroma coding tree node; determining, based on the size and the split mode of the chroma coding tree node, whether to allow cross-component linear model (CCLM) intra prediction to be performed on a chroma coding unit included in the chroma coding tree node; determining a prediction mode of the chroma coding unit depending on whether to allow CCLM to be performed on the chroma coding unit; and processing the chroma coding unit based on the prediction mode of the chroma coding unit to obtain prediction samples of the chroma coding unit.

公开(公告)号：US12022078B2

公开(公告)日：2024-06-25

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 ,  H04N19/176 ,  H04N19/18 ,  H04N19/91

CPC classification number: H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/91

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.