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    ERROR MITIGATION IN SUB-PICTURE BITSTREAM BASED VIEWPORT DEPENDENT VIDEO CODING
    2.
    发明申请
    ERROR MITIGATION IN SUB-PICTURE BITSTREAM BASED VIEWPORT DEPENDENT VIDEO CODING 有权

    公开(公告)号：US20210021815A1

    公开(公告)日：2021-01-21

    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 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

    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.

    Video picture encoding and decoding method and device
    4.
    发明授权
    Video picture encoding and decoding method and device 有权

    公开(公告)号：US11800095B2

    公开(公告)日：2023-10-24

    申请号：US16918301

    申请日：2020-07-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huameng Fang ,  Peiyun Di ,  Fuzheng Yang

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

    CPC classification number: H04N19/117 ,  H04N19/174 ,  H04N19/70

    Abstract: A video picture encoding and decoding method, including obtaining a primary sub-region bitstream corresponding to a target sub-picture of a panoramic picture, where the primary sub-region bitstream includes N secondary sub-region bitstreams, and N is a positive integer, parsing the primary sub-region bitstream to obtain a reconstructed picture, performing cross-sub-region-boundary out-loop filtering on the reconstructed picture when an out-loop filtering identifier instructs to perform cross-sub-region-boundary out-loop filtering on the reconstructed picture, to obtain a filtered reconstructed picture, and adjusting a location of at least one of N sub-regions in the filtered reconstructed picture to obtain a picture having no sub-region boundary.

    Media data transmission method, client, and server
    5.
    发明授权
    Media data transmission method, client, and server 有权

    公开(公告)号：US11368729B2

    公开(公告)日：2022-06-21

    申请号：US17164838

    申请日：2021-02-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huameng Fang ,  Yuqun Fan ,  Peiyun Di ,  Ye-Kui Wang

    IPC: H04N21/2343 ,  H04N21/258 ,  H04N21/435 ,  H04N21/4402

    Abstract: A media data transmission method and an apparatus. The method includes: A client sends first information to a server. The client receives video data packets that correspond to a second target video picture and that are sent by the server. The first information is used to indicate spatial information of a region in which a first target video picture is located, and the first target video picture includes a video picture within a current viewport. The second target video picture includes the first target video picture, at least one of the video data packets corresponding to the second target video picture carries at least one piece of second information, and the second information is used to indicate spatial information of a region in which the second target video picture is located.

    Encoding and decoding method, apparatus, and system
    6.
    发明授权
    Encoding and decoding method, apparatus, and system 有权

    公开(公告)号：US12289492B2

    公开(公告)日：2025-04-29

    申请号：US18173887

    申请日：2023-02-24

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huameng Fang ,  Xin Liu ,  Peiyun Di

    IPC: H04N19/597 ,  H04N21/218 ,  H04N21/4402

    Abstract: An encoding and decoding method are disclosed. The method includes: Each of multiple viewpoint bitstreams includes a first type bitstream and a second type bitstream; when a first image frame in a first type bitstream of a first viewpoint bitstream is played, receiving a switching request that indicates to play a second viewpoint bitstream; determining a first random access frame that is in a first type bitstream and/or a second type bitstream of the second viewpoint bitstream and has a play moment after and closest to the first image frame; decoding to obtain the first random access frame based on encoded data of the first random access frame in the second viewpoint bitstream, and decoding to obtain and play an image frame that is in the first type bitstream of the second viewpoint bitstream by using the first random access frame as a reference frame.

    Video picture processing method and apparatus
    9.
    发明授权
    Video picture processing method and apparatus 有权

    公开(公告)号：US11463700B2

    公开(公告)日：2022-10-04

    申请号：US16880757

    申请日：2020-05-21

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huameng Fang ,  Peiyun Di

    IPC: H04N19/132 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  G06T3/40 ,  G06T7/40 ,  G06T9/00

    Abstract: A video picture processing method includes: sampling an initial picture, to obtain a target picture; dividing the target picture, to obtain a plurality of sub-pictures; extending picture borders of a first-category sub-picture, to obtain an extended first-category sub-picture; downsampling the extended first-category sub-picture, to obtain a downsampled first-category sub-picture; encoding a second-category sub-picture and the downsampled first-category sub-picture, to obtain bitstreams; and writing location information and extension information of the plurality of sub-pictures into the bitstreams, where extension information of the first-category sub-picture is used to indicate that the picture borders of the first-category sub-picture have been extended and indicate extension widths of the picture borders, and extension information of the second-category sub-picture is used to indicate that picture borders of the second-category sub-picture have not been extended.

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