公开(公告)号：US20240422307A1

公开(公告)日：2024-12-19

申请号：US18756553

申请日：2024-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/172 ,  H04N19/187 ,  H04N19/46

Abstract: A method of decoding is provided. The method includes receiving, by the video decoder, a video bitstream including a video parameter set (VPS) and a plurality of layers, where each layer is included in at least one output layer set (OLS) specified by the VPS; and decoding, by the video decoder, a picture from one of the plurality of layers. A method of encoding is also provided. The method of encoding includes generating, by the video encoder, a plurality of layers and a video parameter set (VPS) specifying one or more output layer sets (OLSs), wherein each layer from the plurality of layers is included in at least one of the OLSs specified by the VPS; encoding, by the video encoder, the plurality of layers and the VPS into a video bitstream; and storing, by the video encoder, the video bitstream for communication toward a video decoder.

公开(公告)号：US20240422306A1

公开(公告)日：2024-12-19

申请号：US18732326

申请日：2024-06-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture and a reference picture list structure comprising an inter-layer reference picture flag. The mechanism determines an entry in the reference picture list structure associated with the current picture is an inter-layer reference picture (ILRP) entry based on the inter-layer reference picture flag. The current picture is decoded based on an inter-layer reference picture indicated by the entry in the reference picture list structure when the entry is the ILRP entry. The current picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US20240406385A1

公开(公告)日：2024-12-05

申请号：US18619998

申请日：2024-03-28

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

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：US12149690B2

公开(公告)日：2024-11-19

申请号：US18342503

申请日：2023-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/196 ,  H04N19/119 ,  H04N19/174 ,  H04N19/184 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a sub-bitstream including: a sub-picture of a picture partitioned into a plurality of slices including a first slice, a parameter set associated with the picture and the sub-picture, and a slice header associated with the first slice. The parameter set is parsed to obtain an identifier and a length of a slice address of the first slice. A slice address for the first slice is determined from the slice header based on the identifier and the length of the slice address. The sub-bitstream is decoded to create a video sequence of sub-pictures including the first slice. The video sequence of sub-pictures is forwarded for display.

公开(公告)号：US20240373065A1

公开(公告)日：2024-11-07

申请号：US18659946

申请日：2024-05-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/44 ,  H04N19/46

Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a picture unit (PU), where any decoding capability information (DCI) network abstraction layer (NAL) unit, video parameter set (VPS) NAL unit, sequence parameter set (SPS) NAL unit, or picture parameter set (PPS) NAL unit referred to by the PU precedes a picture header (PH) NAL unit of the PU and a first video coding layer (VCL) NAL unit of the PU; and decoding a coded picture from the PU to obtain a decoded picture.

公开(公告)号：US12088797B2

公开(公告)日：2024-09-10

申请号：US17520322

申请日：2021-11-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/107 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/107 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding into a bitstream a gradual decoding refresh (GDR) access unit (AU) and a buffering period (BP) supplemental enhancement information (SEI) message associated with the GDR AU. A hypothetical reference decoder (HRD) is initialized based on the BP SEI message. A HRD conformance test is performed on the bitstream using the HRD. The bitstream is stored for communication toward a decoder.

公开(公告)号：US12069250B2

公开(公告)日：2024-08-20

申请号：US17472262

申请日：2021-09-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch Sychev ,  Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/11 ,  H04N19/172 ,  H04N19/44

CPC classification number: H04N19/11 ,  H04N19/172 ,  H04N19/44

Abstract: A method of video encoding a sequence of pictures, the method being implemented in an encoding device and comprising: obtaining an intra prediction picture comprising at least two sub-units; obtaining a first encoded other picture, wherein the intra prediction picture and the first encoded other picture have the same Picture Order Count, POC, value; obtaining encoded other pictures different from the intra prediction picture and the first encoded other picture; and distributing the at least two sub-units of the intra prediction picture over one or more sub-units of the encoded other pictures and/or over one or more sub-units of the first encoded other picture.

公开(公告)号：US12058347B2

公开(公告)日：2024-08-06

申请号：US18178196

申请日：2023-03-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry ,  Maxim Borisovitch Sychev

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/30 ,  H04N19/44 ,  H04N19/66 ,  H04N19/70 ,  H04N19/176

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/30 ,  H04N19/44 ,  H04N19/66 ,  H04N19/70 ,  H04N19/176

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. The first level tiles and the second level tiles are encoded into a bitstream. A split indication is encoded into the bitstream. The split indication indicates that at least one of the first level tiles is split into the second level tiles. The bitstream is stored for communication toward a decoder.

公开(公告)号：US12058317B2

公开(公告)日：2024-08-06

申请号：US18072331

申请日：2022-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： F N U Hendry ,  Ye-Kui Wang

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

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70 ,  H04N21/44004 ,  G06T1/60

Abstract: A method for storing a coded video bitstream. The method includes obtaining the coded video bitstream and storing the coded video bitstream in at least one storage medium. The coded video bitstream includes a first reference picture list syntax structure and a second reference picture list syntax structure. Each reference picture list syntax structure contains a number of entries. A first reference picture list of a current slice and a second reference picture list of the current slice are derived based on the first reference picture list syntax structure and the second reference picture list syntax structure. The first reference picture list and the second reference picture list are derived for bitstream conformance checking instead of for decoding a current picture or pictures following the current picture in decoding order when the current slice comprises an intra (I) slice of a non-intra random access point (IRAP) picture.

公开(公告)号：US12041249B2

公开(公告)日：2024-07-16

申请号：US17568517

申请日：2022-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry

IPC: H04N19/169 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70 ,  H04N19/117

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70 ,  H04N19/117

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture including a plurality of video coding layer (VCL) network abstraction layer (NAL) units that do not have a same NAL unit type. Active entries of reference picture lists are obtained for slices positioned in a sub-picture A (subpicA) in subsequent pictures following the current picture in decoding order. The active entries do not refer to any reference picture preceding the current picture in decoding order when the subpicA at the current picture is associated with an intra-random access point (IRAP) NAL unit type. The subsequent pictures are decoded based on the reference picture list active entries. The subsequent pictures are forwarded for display as part of a decoded video sequence.