公开(公告)号：US12120310B2

公开(公告)日：2024-10-15

申请号：US18318730

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：US12058383B2

公开(公告)日：2024-08-06

申请号：US18171619

申请日：2023-02-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry ,  Jianle Chen

IPC: H04N19/184 ,  H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream including a first slice of a coded image. The coded image is associated with a picture parameter set (PPS) in the bitstream. The first slice is associated with a slice header in the bitstream. A list of identifiers (IDs) is parsed from the PPS. A first ID is parsed from the slice header of the first slice. The first ID matches one of the IDs in the list of IDs in the PPS. A list of tiles coded in the first slice is determined based on the first ID. The first slice is determined to generate a reconstructed sub-image of the coded image.

公开(公告)号：US20240244202A1

公开(公告)日：2024-07-18

申请号：US18414481

申请日：2024-01-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han Gao ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Biao Wang ,  Zhijie Zhao

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: The present disclosure provides an encoding apparatus and a decoding apparatus, as well as an encoding method and a decoding method. In particular, the present disclosure relates to block partitioning and signaling the partitioning parameters in a bitstream. An override flag in a slice header indicates whether or not a block is to be partitioned according to a first partition constraint information. The override flag is included in the bitstream and the block is partitioned accordingly.

公开(公告)号：US20240244189A1

公开(公告)日：2024-07-18

申请号：US18419297

申请日：2024-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： FNU Hendry ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/107 ,  H04N19/14 ,  H04N19/162 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/30 ,  H04N19/46

CPC classification number: H04N19/107 ,  H04N19/14 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/46

Abstract: A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder determining whether a value for a first flag is provided by an external input; setting a first flag equal to the value provided by the external input and a second flag equal to the value of the first flag to prevent a gradual decoding refresh (GDR) picture from being output when the value for the first flag is provided by the external input; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).

公开(公告)号：US12022107B2

公开(公告)日：2024-06-25

申请号：US17484803

申请日：2021-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/577 ,  H04N19/33

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/577 ,  H04N19/33

Abstract: A method of decoding includes determining, by the video decoder, whether a resolution of a current picture being decoded is the same as the resolution of reference pictures identified by a reference picture list associated with the current picture; enabling, by the video decoder, decoder-side motion vector refinement (DMVR) for a current block of the current picture when the resolution of the current picture is determined to be the same as the resolution of each of the reference pictures; disabling, by the video decoder, the DMVR for the current block of the current picture when the resolution of the current picture is determined to be different than the resolution of either of the reference pictures; and refining, by the video decoder, motion vectors corresponding to the current block using the DMVR when the DMVR flag is enabled for the current block.

公开(公告)号：US20240195958A1

公开(公告)日：2024-06-13

申请号：US18390930

申请日：2023-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry ,  Jianle Chen

IPC: H04N19/117 ,  H04N19/169 ,  H04N19/174 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/174 ,  H04N19/186 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a slice and a luma mapping with chroma scaling (LMCS) adaptation parameter set (APS) including LMCS parameters. The mechanism further includes determining that the LMCS APS is referenced in data related to the slice. The mechanism further includes decoding the slice using LMCS parameters from the LMCS APS based on the reference to the LMCS APS. The mechanism further includes forwarding the slice for display as part of a decoded video sequence.

公开(公告)号：US11973945B2

公开(公告)日：2024-04-30

申请号：US17447340

申请日：2021-09-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132

Abstract: The present disclosure provides a method of video coding implemented in a decoding device or an encoding device, the method comprising: determining a block size of a current coding block, the current coding block being coded in intra prediction mode; selecting, based on the determined block size of the current coding block, a sub-partitioning rule that determines a number of sub-partitions and a partition direction into which the current coding block is to be divided; and dividing the current coding block into sub-partitions based on the selected sub-partitioning rule.

公开(公告)号：US11968407B2

公开(公告)日：2024-04-23

申请号：US17198961

申请日：2021-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream including image data coded in a plurality of slices. A top left tile identifier (ID) and a bottom right tile ID of a first slice are determined. Boundaries of the first slice are determined based on the top left tile ID and the bottom right tile ID. The first slice is decoded to generate a reconstructed image based on the boundaries of the first slice.

公开(公告)号：US11968362B2

公开(公告)日：2024-04-23

申请号：US17877492

申请日：2022-07-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich Filippov ,  Jianle Chen ,  Vasily Alexeevich Rufitskiy

IPC: H04N19/117 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/176

Abstract: A method of video coding, wherein the method comprises inter-prediction processing of a first block, wherein the inter-prediction processing comprises subpixel interpolation filtering of samples of a reference block; intra-prediction processing of a second block, wherein the intra-prediction processing comprises subpixel interpolation filtering of reference samples; wherein the method further comprises selecting interpolation filter coefficients for the subpixel interpolation filtering based on a subpixel offset between integer reference sample positions and fractional reference samples' positions, wherein for the same subpixel offsets the same interpolation filter coefficients are selected for intra-prediction processing and inter-prediction processing.

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.