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    OLS For Multiview Scalability
    182.
    发明申请
    OLS For Multiview Scalability 有权

    公开(公告)号：US20240422341A1

    公开(公告)日：2024-12-19

    申请号：US18821483

    申请日：2024-08-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ye-Kui Wang

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

    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising an output layer set (OLS) and a video parameter set (VPS). The OLS includes one or more layers of coded pictures and the VPS includes an OLS mode identification code (ols_mode_idc) specifying that for each OLS, all layers in the each OLS are output layers. The output layers are determined based on the ols_mode_idc in the VPS. A coded picture from the output layers is decoded to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence.

    Reference Picture Management in Video Coding
    183.
    发明申请
    Reference Picture Management in Video Coding 有权

    公开(公告)号：US20240406374A1

    公开(公告)日：2024-12-05

    申请号：US18673031

    申请日：2024-05-23

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： FNU Hendry ,  Ye-Kui Wang

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

    Abstract: A method of decoding a coded video bitstream is provided. The method includes obtaining a reference picture list structure for a current slice represented in the coded video bitstream; constructing a reference picture list for the current slice based on the reference picture list structure such that a number of entries in the reference picture list and an order of the entries in the reference picture list are both the same as in the reference picture list structure, wherein the reference picture list contains a plurality of active entries and a plurality of inactive entries; and obtaining, based on at least one active entry of the reference picture list, at least one reconstructed block of the current slice.

    Avoidance of redundant signaling in multi-layer video bitstreams
    184.
    发明授权
    Avoidance of redundant signaling in multi-layer video bitstreams 有权

    公开(公告)号：US12143640B2

    公开(公告)日：2024-11-12

    申请号：US17713974

    申请日：2022-04-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ye-Kui Wang

    IPC: H04N19/70 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593

    Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a plurality of layers having sublayers and a video parameter set (VPS) including a first flag having a first value, wherein the first flag having the first value specifies that temporal identifiers (IDs) of a highest sublayer representation for level information, decoded picture buffer (DPB) parameters, and hypothetical decoder refresh (HRD) parameters are not present in the VPS and are inferred to be equal to a maximum number of the sublayers that may be present in a layer of the plurality of layers specified by the VPS; obtaining the level information, the HRD parameters, and the DPB parameters corresponding to the temporal ID of the highest sublayer representation from the VPS; and decoding a picture from one of the plurality of layers to obtain a decoded picture. A corresponding method of encoding is also provided.

    Scalable nesting SEI messages for OLSs
    188.
    发明授权
    Scalable nesting SEI messages for OLSs 有权

    公开(公告)号：US12096012B2

    公开(公告)日：2024-09-17

    申请号：US17702022

    申请日：2022-03-23

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ye-Kui Wang

    IPC: H04N19/70 ,  H04N19/31

    CPC classification number: H04N19/31 ,  H04N19/70

    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising one or more layers and a scalable nesting supplemental enhancement information (SEI) message. The scalable nesting SEI message includes one or more scalable-nested SEI messages and a scalable nesting output layer set (OLS) flag. The scalable nesting OLS flag is set to specify whether the scalable-nested SEI messages apply to specific OLSs or specific layers. A coded picture is decoded from the one or more layers to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence.

    Disallowing unused layers in multi-layer video bitstreams
    189.
    发明授权
    Disallowing unused layers in multi-layer video bitstreams 有权

    公开(公告)号：US12088787B2

    公开(公告)日：2024-09-10

    申请号：US17700715

    申请日：2022-03-22

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ye-Kui Wang

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

    CPC classification number: H04N19/105 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/1883 ,  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.

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