公开(公告)号：US12047609B2

公开(公告)日：2024-07-23

申请号：US17707202

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Maxim Borisovitch Sychev ,  Huanbang Chen ,  Alexander Alexandrovich Karabutov ,  Roman Igorevich Chernyak ,  Sergey Yurievich Ikonin ,  Haitao Yang ,  Elena Alexandrovna Alshina

IPC: H04N19/82 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/52 ,  H04N19/80

CPC classification number: H04N19/80 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/197 ,  H04N19/52

Abstract: An apparatus for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels associated with a current block of a current frame of a video signal is disclosed. The apparatus is configured to: determine a motion vector of the current full-integer pixel based on a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in a reference frame; determine positions of a set of corresponding filter support pixels in the reference frame; obtain a respective sample value of the corresponding sub-integer pixel of the current full-integer pixel and the corresponding filter support pixels in the reference frame by applying a bilinear interpolation; and determine the inter predicted sample value of the current full-integer pixel.

公开(公告)号：US11962787B2

公开(公告)日：2024-04-16

申请号：US17870428

申请日：2022-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/186 ,  H04N19/176

Abstract: The present disclosure provides a chroma block prediction method and a device. The method includes: parsing a bitstream to obtain first indication information; downsampling a first luma block by a first filter when a value of the first indication information is a first value or by using a second filter when a value of the first indication information is a second value, to obtain a second luma block; obtaining a plurality of chroma samples and a plurality of luma samples; obtaining linear model coefficients based on the plurality of chroma samples and the plurality of luma samples; and obtaining a prediction value of the current chroma block based on the second luma block and the linear model coefficients.

公开(公告)号：US11956455B2

公开(公告)日：2024-04-09

申请号：US17732205

申请日：2022-04-28

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：US11949908B2

公开(公告)日：2024-04-02

申请号：US17941895

申请日：2022-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196 ,  H04N19/513 ,  H04N19/53 ,  H04N19/54 ,  H04N19/57 ,  H04N19/573 ,  H04N19/82

CPC classification number: H04N19/521 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196 ,  H04N19/52 ,  H04N19/53 ,  H04N19/54 ,  H04N19/57 ,  H04N19/573 ,  H04N19/82

Abstract: The present disclosure provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a distance between control points for an affine picture block; determining a motion vector difference for the affine picture block, motion vectors of the control points being used to determine the motion vector difference; and performing coding processing on the affine picture block over a size that includes a horizontal length and a vertical length, wherein the horizontal length and the vertical length vary based on the distance between the control points, the motion vector difference, and a motion vector precision.

公开(公告)号：US11831902B2

公开(公告)日：2023-11-28

申请号：US17556579

申请日：2021-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sixin Lin ,  Ruopu Huang ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513 ,  H04N19/523 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56

CPC classification number: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/537 ,  H04N19/56

Abstract: A picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of the motion vector of each of the P pixel units is 1/N of the pixel precision, the motion vector of each of the P pixel units is used to determine a corresponding reference pixel unit in a reference picture of a corresponding pixel unit; and performing interpolation filtering on a pixel of the corresponding reference pixel unit by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units.

公开(公告)号：US11758134B2

公开(公告)日：2023-09-12

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

CPC classification number: 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：US11722668B2

公开(公告)日：2023-08-08

申请号：US17336712

申请日：2021-06-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

CPC classification number: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

Abstract: A video decoding method includes parsing a bitstream to obtain a split mode to transform units (TUs) in a current coding unit (CU). Each of the TUs has a serial number in a one-to-one correspondence with positions of the TUs in the current CU. A transform coefficient of a luminance transform block of a current TU in the TUs is obtained. A transform type of the luminance transform block of the current TU is obtained based on the split mode and a serial number of the current TU. An inverse transform on the transform coefficient of the luminance transform block of the current TU is performed based on the transform type of the luminance transform block of the current TU to obtain a reconstructed residual of the luminance transform block of the current TU. A reconstructed block of the current CU is obtained based on the reconstructed residual.

公开(公告)号：US11711511B2

公开(公告)日：2023-07-25

申请号：US17240508

申请日：2021-04-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei Xu ,  Haitao Yang ,  Yin Zhao

IPC: H04N19/11 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70

CPC classification number: H04N19/11 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70

Abstract: A picture prediction method includes receiving a bitstream, parsing the bitstream to obtain a prediction mode of a current block, when the prediction mode of the current block is a combined intra and inter prediction mode, selecting an execution manner of a triangular prediction unit mode according to a preset policy, determining motion information of the current block according to the execution manner of the triangular prediction unit mode, performing a motion compensation process based on the motion information, to obtain an inter prediction sample, obtaining an intra prediction sample according to the prediction mode of the current block, and combining the inter prediction sample and the intra prediction sample to obtain a prediction picture of the current block.

公开(公告)号：US11706417B2

公开(公告)日：2023-07-18

申请号：US17195798

申请日：2021-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang Chen ,  Haitao Yang

IPC: H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

CPC classification number: H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: A video decoding method includes obtaining a to-be-entropy-decoded syntax element in a current block by parsing a received bitstream, where the to-be-entropy-decoded syntax element includes a syntax element 1 or a syntax element 2 in the current block, obtaining a context model corresponding to the to-be-entropy-decoded syntax element, where both of a context model corresponding to the syntax element 1 and a context model corresponding to the syntax element 2 are determined from the same preset context model set, entropy decoding the to-be-entropy-decoded syntax element based on the context model corresponding to the to-be-entropy-decoded syntax element, and obtaining a reconstructed image of the current block based on the syntax element obtained by entropy decoding.

公开(公告)号：US11659161B2

公开(公告)日：2023-05-23

申请号：US17189577

申请日：2021-03-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang Chen ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/137

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176

Abstract: A reference frame obtaining method includes determining a first reference frame list and a second reference frame list of a current picture block, determining, from the first reference frame list, whether an X-directional reference frame x1 satisfying a condition A1 exists, determining, from the second reference frame list, whether a Y-directional reference frame y1 satisfying a condition B1 exists, and in response to determining that the X-directional reference frame x1 exists and determining that the Y-directional reference frame y1 exists, obtaining index values (R1, R2) of bidirectional reference frames of the current picture block.