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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

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

    摘要： 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

    申请人： Huawei Technologies Co., Ltd.

    发明人： Huameng Fang ,  Peiyun Di ,  Fuzheng Yang

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

    CPC分类号： H04N19/117 ,  H04N19/174 ,  H04N19/70

    摘要： 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

    申请人： Huawei Technologies Co., Ltd.

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

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

    摘要： 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.

    Video picture processing method and apparatus
    8.
    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

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

    发明人： Huameng Fang ,  Peiyun Di

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

    摘要： 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.

    BITSTREAM SIGNALING OF ERROR MITIGATION IN SUB-PICTURE BITSTREAM BASED VIEWPORT DEPENDENT VIDEO CODING
    10.
    发明申请
    BITSTREAM SIGNALING OF ERROR MITIGATION IN SUB-PICTURE BITSTREAM BASED VIEWPORT DEPENDENT VIDEO CODING 有权

    公开(公告)号：US20210021814A1

    公开(公告)日：2021-01-21

    申请号：US17061416

    申请日：2020-10-01

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/46 ,  H04N19/70 ,  H04N19/597 ,  H04N19/176 ,  G06T9/00 ,  G06T19/00

    摘要： 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.