公开(公告)号：US20220345739A1

公开(公告)日：2022-10-27

申请号：US17858567

申请日：2022-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Xiang MA ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: This application provides a video picture prediction method and apparatus, to resolve a problem in a conventional technology that a length of a coded video sequence is increased. The first type of identifier may be added to a bitstream. The first type of identifier is used to indicate whether an affine motion model-based inter prediction mode is enabled for a video picture. For a video picture or a picture block included in the slice for which the affine motion model does not need to be used, a parameter, related to the affine motion model, of the picture block may not need to be transmitted. On a decoder side, during decoding of the picture block, the parameter related to the affine motion model does not need to be parsed. This can reduce load of a decoder, increase a processing speed, and decrease a processing time.

公开(公告)号：US20220337881A1

公开(公告)日：2022-10-20

申请号：US17852903

申请日：2022-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang MA ,  Haitao YANG

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/172 ,  H04N19/117 ,  H04N19/186

Abstract: The present disclosure provides a method of decoding a coded video bitstream, the method comprising: obtaining a picture-level syntax element included in a picture header of the current picture by parsing the video bitstream, wherein the picture-level syntax element is used to specify whether an adaptive loop filter (ALF) is enabled for the current picture; in case that the picture-level syntax element specifies the adaptive loop filter is enabled for the current picture, obtaining a parameter set identifier included in the picture header, wherein the parameter set identifier is used to indicate a first parameter set comprising a set of ALF parameters, and wherein a temporal identifier of the first parameter set is less than or equal to a temporal identifier of the current picture; performing the adaptive loop filter on at least one slice of the current picture based on the first parameter set.

公开(公告)号：US20220329788A1

公开(公告)日：2022-10-13

申请号：US17843798

申请日：2022-06-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN ,  Lian ZHANG

IPC: H04N19/107 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: An image prediction method, apparatus, and system, a device, and a storage medium are provided. The method includes: (401) obtaining a split mode of a current node, where the current node is an image block in a coding tree unit in a current image; (402) determining, based on the split mode of the current node and a size of the current node, whether the current node satisfies a first condition; and (403) when it is determined that the current node satisfies the first condition, performing intra prediction on all coding blocks belonging to the current node, to obtain predictors of all the coding blocks belonging to the current node.

公开(公告)号：US20220217332A1

公开(公告)日：2022-07-07

申请号：US17702026

申请日：2022-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Haitao YANG ,  Huanbang CHEN ,  Vasily Alexeevich RUFITSKIY

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

Abstract: A computer-implemented method of determining whether an inter prediction process is enabled is provided in this application, the method comprising:
obtaining an indication, the indication indicating whether a slice-level weighted prediction mechanism is to be enabled in the inter prediction process;
determining, based on the indication, whether a non-rectangular merge mode or whether the slice-level weighted prediction mechanism is to be enabled in the inter prediction process.
Furthermore, an encoder for encoding a datastream, like a video stream, using an inter prediction process and a decoder for decoding an encoded datastream, like an encoded video stream, using an inter prediction process, are provided.

公开(公告)号：US20220159292A1

公开(公告)日：2022-05-19

申请号：US17590580

申请日：2022-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Haitao YANG ,  Shan GAO

IPC: H04N19/52 ,  H04N19/86 ,  H04N19/139 ,  H04N19/176 ,  H04N19/117 ,  H04N19/583 ,  H04N19/119 ,  H04N19/61 ,  H04N19/43

Abstract: The present invention relates to the field of video image processing, and provides a filtering method and an apparatus, to resolve a problem that subjective quality and objective quality of an image deteriorate because filtering processing cannot be performed on internal blocks of a non-translational motion prediction unit.

公开(公告)号：US20220116661A1

公开(公告)日：2022-04-14

申请号：US17561184

申请日：2021-12-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/18 ,  H04N19/186 ,  H04N19/176

Abstract: A method includes parsing a transform coefficient of a transform block in a current coding unit to obtain a first transform coefficient matrix. The method also includes obtaining a quantity K of non-zero transform coefficients in a top-left preset region of the first transform coefficient matrix. The method also includes parsing an index value based on the quantity K being greater than a threshold. The method also includes determining a transform matrix based on the index value. The method also includes multiplying N transform coefficients of the first transform coefficient matrix by the transform matrix to obtain M transform coefficients. The method also includes updating the first transform coefficient matrix by using the M transform coefficients to obtain a second transform coefficient matrix. The method also includes performing an inverse transform on the second transform coefficient matrix to obtain residual samples of the current coding unit.

公开(公告)号：US20210258570A1

公开(公告)日：2021-08-19

申请号：US17242545

申请日：2021-04-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG

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

Abstract: A video picture prediction method and apparatus are provided, to provide a manner of determining a maximum length of a candidate motion vector list corresponding to a subblock merge mode. The method comprises: parsing a first indicator from a bitstream; if the first indicator indicates that a candidate mode used to inter predict the to-be-processed block comprises an affine mode, parsing a second indicator from the bitstream, where the second indicator is used to indicate a maximum length of a first candidate motion vector list, and the first candidate motion vector list is constructed for the to-be-processed block, a subblock merge prediction mode is used for the to-be-processed block; and determining the maximum length of the first candidate motion vector list based on the second indicator.

公开(公告)号：US20210235105A1

公开(公告)日：2021-07-29

申请号：US17196642

申请日：2021-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Haitao YANG

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/149

Abstract: This application discloses a motion vector prediction method based on an affine motion model and a device. The method includes: obtaining one spatial reference block of a to-be-processed picture block; determining a plurality of preset subblock locations of the spatial reference block; obtaining motion vectors corresponding to preset pixel locations of the to-be-processed picture block that are extrapolated from motion vectors corresponding to the preset subblock locations; and obtaining motion vectors corresponding to a plurality of subblock locations of the to-be-processed picture block that are interpolated from the motion vectors corresponding to the preset pixel locations. According to this application, prediction accuracy in coding can be improved, and coding efficiency can be improved.

公开(公告)号：US20210195226A1

公开(公告)日：2021-06-24

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 ,  H04N19/169 ,  H04N19/176

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：US20210044839A1

公开(公告)日：2021-02-11

申请号：US17066936

申请日：2020-10-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhao WANG ,  Siwei MA ,  Shan GAO ,  Haitao YANG

IPC: H04N19/96 ,  H04N19/176 ,  H04N19/119 ,  H04N19/157

Abstract: A decoding method includes: parsing a data stream, and if partitioning an image block with a size of 2N×2N using a quadtree partition pattern is allowed, processing a 2N×N first subimage block and a 2N×N second subimage block or an N×2N first subimage block and an N×2N second subimage block in a constraint subimage processing mode, wherein an image block partition pattern obtained for the partitioned second subimage block and the partitioned first subimage block is different from an image block partition pattern obtained after the 2N×2N image block is partitioned using the quadtree partition pattern, where the 2N×N first subimage block and the 2N×N second subimage block or the N×2N first subimage block and the N×2N second subimage block are obtained by partitioning the image block with the size of 2N×2N.