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：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：US12267531B2

公开(公告)日：2025-04-01

申请号：US17665263

申请日：2022-02-04

Applicant: Huawei Technologies Co., Ltd.

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

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

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving at a decoder, a bitstream including a video coding layer (VCL) network abstraction layer (NAL) unit containing a slice of image data divided into a plurality of tiles. A number of the tiles in the VCL NAL unit are determined. A number of entry point offsets for the tiles is also determined as one less than the number of the tiles in the VCL NAL unit. Each entry point offset indicates a starting location of a corresponding tile in the VCL NAL unit. The number of entry point offsets is not explicitly signaled in the bitstream. The entry point offsets for the tiles are obtained based on the number of entry point offsets. The tiles are decoded at the entry point offsets to generate a reconstructed image.

公开(公告)号：US12267490B2

公开(公告)日：2025-04-01

申请号：US17470407

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a flag and a picture including a tile with a tile boundary. The tile is decoded. Filtering operations are performed across the tile boundary when the flag is set to a first value. The filtering operations across the tile boundary are omitted when the flag is set to a second value. The tile is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12192490B2

公开(公告)日：2025-01-07

申请号：US17471066

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/169 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196 ,  H04N19/433 ,  H04N19/44 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of sub-pictures associated with a picture and a flag. The sub-pictures are contained in a plurality of video coding layer (VCL) network abstraction layer (NAL) units. A NAL unit type value is the same for all VCL NAL units associated with the picture when the flag is set to a first value. When the flag is set to a second value, a first NAL unit type value for VCL NAL units containing one or more of the sub-pictures of the picture is different than a second NAL unit type value for VCL NAL units containing one or more of the sub-pictures of the picture. The sub-pictures are decoded based on the NAL unit type values. The sub-pictures are forwarded for display as part of a decoded video sequence.

公开(公告)号：US12028517B2

公开(公告)日：2024-07-02

申请号：US17470376

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture including a sub-picture coded according to inter-prediction. A motion vector for a block of the sub-picture is determined. A clipping function is applied to sample locations in a reference block to support application of an interpolation filter when the motion vector points outside of the sub-picture and when a flag is set to indicate the sub-picture is treated as a picture. The interpolation filter is applied to results of the clipping function to obtain a predicted sample value. The block is decoded based on the predicted sample value. The block is forwarded for display as part of a decoded video sequence.

公开(公告)号：US20230319299A1

公开(公告)日：2023-10-05

申请号：US18328040

申请日：2023-06-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/436 ,  H04N19/119 ,  H04N19/132 ,  H04N19/174 ,  H04N19/169 ,  H04N19/44 ,  H04N19/137 ,  H04N19/184 ,  H04N19/593

CPC classification number: H04N19/436 ,  H04N19/119 ,  H04N19/132 ,  H04N19/174 ,  H04N19/1883 ,  H04N19/44 ,  H04N19/137 ,  H04N19/184 ,  H04N19/593 ,  H04N19/188 ,  H04N19/176

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising one or more sub-pictures partitioned from a picture such that each sub-picture includes a sub-picture width that is an integer multiple of a coding tree unit (CTU) size when the each sub-picture includes a right boundary that does not coincide with a right boundary of the picture. The bitstream is parsed to obtain the one or more sub-pictures. The one or more sub-pictures are decoded to create a video sequence. The video sequence is forwarded for display.

公开(公告)号：US11632545B2

公开(公告)日：2023-04-18

申请号：US17470776

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

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

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

Abstract: A method of decoding a coded video bitstream implemented by a video decoder is disclosed. The method includes determining that a coded video sequence (CVS) of the coded video bitstream includes a video coding layer (VCL) network abstraction layer (NAL) unit having a gradual decoding refresh (GDR) network abstraction layer (NAL) unit type (GDR_NUT), the VCL NAL unit having the GDR_NUT containing a GDR picture; initiating decoding of the CVS at the GDR picture; and generating an image according to the CVS as decoded. A corresponding method of encoding is also disclosed.

公开(公告)号：US11553191B2

公开(公告)日：2023-01-10

申请号：US17348720

申请日：2021-06-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/174 ,  H04N19/117 ,  H04N19/134 ,  H04N19/172 ,  H04N19/136 ,  H04N19/159

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of tiles. A number of the tiles are included in a tile group. The mechanism determines whether the tile group is a raster scan tile group or a rectangular tile group. The number of tiles in the tile group is determined based on whether the tile group is the raster scan tile group or the rectangular tile group. The tiles are encoded into a bitstream based on the tile group. The bitstream is stored for communication toward a decoder.

公开(公告)号：US11546580B2

公开(公告)日：2023-01-03

申请号：US17176582

申请日：2021-02-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/58 ,  H04N19/46 ,  H04N21/44 ,  G06T1/60

Abstract: A method of decoding a coded video bitstream is provided. The method includes obtaining a first reference picture list structure and a second reference picture list structure represented in the coded video bitstream; deriving, based on the first reference picture list structure and the second reference picture list structure, a first reference picture list of a current slice and a second reference picture list of the current slice, wherein the current slice comprises an intra (I) slice or a uni-predictive (P) slice; and obtaining at least one reconstructed block of the current slice following derivation of the first reference picture list and the second reference picture list.