公开(公告)号：US12075029B2

公开(公告)日：2024-08-27

申请号：US17959088

申请日：2022-10-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/503 ,  G06T9/00 ,  G06T19/00 ,  H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

CPC classification number: H04N19/105 ,  G06T9/00 ,  G06T19/006 ,  H04N19/13 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergeable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergeable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US11638003B2

公开(公告)日：2023-04-25

申请号：US17370120

申请日：2021-07-08

Applicant: Zhejiang University ,  Huawei Technologies Co., Ltd.

Inventor： Lu Yu ,  Ye-Kui Wang ,  Hualong Yu ,  Yin Zhao ,  Yuqun Fan ,  Xiaoding Gao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46

Abstract: A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.

公开(公告)号：US11575886B2

公开(公告)日：2023-02-07

申请号：US17061416

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  H04N19/176 ,  G06T19/00

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US11528474B2

公开(公告)日：2022-12-13

申请号：US17061416

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  H04N19/176 ,  G06T19/00

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US20220337819A1

公开(公告)日：2022-10-20

申请号：US17857907

申请日：2022-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  G06T19/00 ,  H04N19/13 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/159

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes receiving a spherical video signal stitched from multiple directional video streams. The spherical video signal is mapped into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals, are encoded as a plurality of sub-picture bitstreams, such that, when decoded at a decoder, a value of each sample in each sub-picture is identical to a value of a corresponding sample in a decoded entire picture composed from the sub-pictures. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks with an indication that the sub-picture tracks are conforming to a particular video profile. The sub-picture bitstreams are transmitted toward a decoder to support decoding and displaying virtual reality video viewport.

公开(公告)号：US20220337813A1

公开(公告)日：2022-10-20

申请号：US17712517

申请日：2022-04-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  G06T19/00 ,  H04N19/13 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/159

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video signal, stitched from multiple directional video signals, into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals are encoded as a plurality of sub-picture bitstreams. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks to be compatible with a multi-bitstream merge function for reconstruction of the spherical video signal. A track level mergable indication is encoded within a track level box for the sub-picture tracks, which indicates the sub-picture tracks are compatible with the multi-bitstream merge function for reconstruction of the spherical video signal.

公开(公告)号：US11405606B2

公开(公告)日：2022-08-02

申请号：US17061421

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/46 ,  H04N19/159 ,  H04N19/176 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  G06T19/00 ,  H04N19/13 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes receiving a spherical video signal stitched from multiple directional video streams. The spherical video signal is mapped into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals, are encoded as a plurality of sub-picture bitstreams, such that, when decoded at a decoder, a value of each sample in each sub-picture is identical to a value of a corresponding sample in a decoded entire picture composed from the sub-pictures. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks with an indication that the sub-picture tracks are conforming to a particular video profile. The sub-picture bitstreams are transmitted toward a decoder to support decoding and displaying virtual reality video viewport.

公开(公告)号：US11317087B2

公开(公告)日：2022-04-26

申请号：US17061405

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  H04N19/13 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/159 ,  G06T9/00 ,  G06T19/00

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video signal, stitched from multiple directional video signals, into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals are encoded as a plurality of sub-picture bitstreams. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks to be compatible with a multi-bitstream merge function for reconstruction of the spherical video signal. A track level mergable indication is encoded within a track level box for the sub-picture tracks, which indicates the sub-picture tracks are compatible with the multi-bitstream merge function for reconstruction of the spherical video signal.

公开(公告)号：US11172239B2

公开(公告)日：2021-11-09

申请号：US16926080

申请日：2020-07-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huameng Fang ,  Peiyun Di ,  Yuqun Fan

IPC: H04N21/218 ,  H04N21/234 ,  H04N21/235 ,  H04N21/44 ,  H04N21/81 ,  H04N21/84

Abstract: A media information processing method includes obtaining sub-bitstream data, where the sub-bitstream data includes indication information, and the indication information is used to indicate an amount of tile data included in the sub-bitstream data, or the indication information is used to indicate whether the sub-bitstream data can be used for splicing, and processing the sub-bitstream data based on the indication information.

公开(公告)号：US20210337220A1

公开(公告)日：2021-10-28

申请号：US17366735

申请日：2021-07-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lu Yu ,  Ye-Kui Wang ,  Yuqun Fan ,  Hualong Yu ,  Yin Zhao ,  Xiangyu Lin ,  Haitao Yang

IPC: H04N19/184 ,  H04N19/172 ,  H04N19/136

Abstract: A decoding method includes obtaining an identifier from a bitstream, where the identifier indicates a minimum decoding time interval k between library pictures that is allowed in the bitstream, obtaining, when parsing the bitstream, a decoding moment ti of a current decoded picture and a decoding moment tj of a first decoded picture that is closest to the current decoded picture and that references a new library picture when the current decoded picture is decoded by referencing a library picture, where the new library picture is a library picture that is not decoded or needs to be re-decoded when the first decoded picture is decoded, and determining a preset quantity of library pictures as candidate reference pictures of the current decoded picture based on a relationship between k and a difference between ti and tj.