公开(公告)号：US11496732B2

公开(公告)日：2022-11-08

申请号：US17234976

申请日：2021-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Hong Zhang ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/517

Abstract: The present disclosure provides a video image decoding method in which a size of an affine motion compensation image sub-block in an affine image block is determined based on a motion vector difference, motion vector precision, a distance between control points in the affine image block, and a size of the affine image block, where the size includes a length in a horizontal direction and a length in a vertical direction, so that a length of the affine image block in a horizontal/vertical direction is an integer multiple of the length of the affine motion compensation image sub-block in the horizontal/vertical direction.

公开(公告)号：US11490115B2

公开(公告)日：2022-11-01

申请号：US17122844

申请日：2020-12-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

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

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：US11431997B2

公开(公告)日：2022-08-30

申请号：US17191934

申请日：2021-03-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176 ,  H04N19/169

Abstract: The present disclosure discloses a video decoding method and a video decoder. The method includes: parsing coding tree split information to obtain a current node; determining coordinates of an upper-left corner of a region covered by a current quantization group based on a depth N of the current node; obtaining a QP delta of a current CU in the region covered by the current quantization group; and obtaining a reconstructed picture of the current CU based on the QP delta of the current CU.

公开(公告)号：US20220264135A1

公开(公告)日：2022-08-18

申请号：US17585793

申请日：2022-01-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang ,  Huanbang Chen ,  Jianle Chen

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/51 ,  H04N19/70

Abstract: A method of determining one or more candidate prediction modes, the method comprises deriving, by a processor, a first indicator by parsing a bitstream, wherein the first indicator specifies whether any affine model is a candidate motion model for an image block in a preset area; determining, by the processor, that the first indicator is set to 1; deriving, by the processor and based on the determination that the first indicator is set to 1, a second indicator by parsing the bitstream, wherein the second indicator specifies whether a 6-parameter affine model is a candidate motion model for the image block; and determining, by the processor, one or more candidate prediction modes for the image block based on the first indicator and the second indicator.

公开(公告)号：US20220264094A1

公开(公告)日：2022-08-18

申请号：US17708861

申请日：2022-03-30

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: H04N19/122 ,  H04N19/176 ,  H04N19/547 ,  H04N19/523

Abstract: A method related to adaptive usage of pixel-based and block-based affine motion compensation and includes performing sub-block-based affine transform prediction on an affine block with a first sub-block size if the first sub-block size is greater than or equal to a first sub-block size threshold. If the first sub-block size is less than the first sub-block size threshold, it is determined whether a pixel-based motion vector field is not applied for performing motion compensation for the affine block. If the motion vector field is not applied, a sub-block-based affine motion prediction is performed with a second sub-block size that is based on the first sub-block size. If the pixel-based motion vector field is applied, motion compensation is performed for a sub-block of the affine block using the pixel-based motion vector field.

公开(公告)号：US11412248B2

公开(公告)日：2022-08-09

申请号：US17017485

申请日：2020-09-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Sixin Lin ,  Haitao Yang

IPC: H04N19/52 ,  H04N19/139 ,  H04N19/513 ,  H04N19/176 ,  H04N19/105 ,  H04N19/124 ,  H04N19/157

Abstract: An image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

公开(公告)号：US11412215B2

公开(公告)日：2022-08-09

申请号：US17492122

申请日：2021-10-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/70

Abstract: A method of decoding a coded video bitstream includes obtaining a sequence parameter set (SPS)-level syntax element from the bitstream, wherein that the SPS-level syntax element equals to a preset value specifies that no video parameter set (VPS) is referred to by a SPS, and the SPS-level syntax element greater than the preset value specifies that the SPS refers to a VPS, obtaining, as the SPS-level syntax element is greater than the preset value, an inter-layer enabled syntax element specifying whether one or more inter-layer reference pictures (ILRPs) are enabled to be used for the inter prediction of one or more coded pictures, and predicting one or more coded pictures based on the value of the inter-layer enabled syntax element.

公开(公告)号：US20220247999A1

公开(公告)日：2022-08-04

申请号：US17714503

申请日：2022-04-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Elena Alexandrovna Alshina ,  Vasily Alexeevich Rufitskiy ,  Huanbang Chen ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/174 ,  H04N19/46

Abstract: An inter prediction method includes determining whether a non-rectangular inter prediction mode is allowed for a group of blocks; obtaining one or more inter prediction mode parameters and weighted prediction parameters for the group of blocks; and obtaining prediction value of a current block based on the one or more inter prediction mode parameters and weighted prediction parameters, wherein one of the inter prediction mode parameters indicates reference picture information for the current block, and wherein the group of blocks comprises the current block.

公开(公告)号：US20220217370A9

公开(公告)日：2022-07-07

申请号：US16848555

申请日：2020-04-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/196 ,  H04N19/61 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176

Abstract: A video decoding device receives a bitstream including a prediction block and a residual block with coefficients transformed by a Spatial Varying Transform (SVT). The video decoding device determines a type of SVT employed to transform the coefficients in the residual block and determines a position of the SVT relative to the residual block by determining a candidate position step size and a position index for the SVT. The video decoding device applies an inverse transform to the coefficients based on the SVT type and position to create a reconstructed residual block. The video decoding device applies the reconstructed residual block to the prediction block to reconstruct a video block and reconstructs a video sequence for display, the video sequence including a video frame that includes the reconstructed video block.

公开(公告)号：US11375205B2

公开(公告)日：2022-06-28

申请号：US17104894

申请日：2020-11-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.