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    EFFICIENT SIGNALING OF PICTURE SIZE AND PARTITIONING INFORMATION
    34.
    发明公开
    EFFICIENT SIGNALING OF PICTURE SIZE AND PARTITIONING INFORMATION 审中-公开

    公开(公告)号：US20230300361A1

    公开(公告)日：2023-09-21

    申请号：US18324573

    申请日：2023-05-26

    Applicant: TENCENT AMERICA LLC

    Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

    IPC: H04N19/46 ,  H04N19/122 ,  H04N19/119 ,  H04N19/136

    CPC classification number: H04N19/46 ,  H04N19/122 ,  H04N19/119 ,  H04N19/136

    Abstract: A method of efficient signalizing of picture size and partitioning information in a video bitstream, is performed by at least one processor and includes obtaining, from a sequence parameter set (SPS) to which a coded picture refers, a flag indicating whether the picture size and partitioning information of the coded picture is included in the SPS, and determining whether the obtained flag indicates that the picture size and partitioning information is included in the SPS. The method further includes based on the flag being determined to indicate that the picture size and partitioning information is included in the SPS, obtaining, from the SPS, the picture size and partitioning information, and based on the flag being determined to indicate that the picture size and partitioning information is not included in the SPS, obtaining, from a video parameter set (VPS), the picture size and partitioning information that is included in the VPS.

    DECODED PICTURE BUFFER MANAGEMENT FOR VIDEO CODING
    38.
    发明申请
    DECODED PICTURE BUFFER MANAGEMENT FOR VIDEO CODING 有权

    公开(公告)号：US20230013580A1

    公开(公告)日：2023-01-19

    申请号：US17941560

    申请日：2022-09-09

    Applicant: TENCENT AMERICA LLC

    Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

    IPC: H04N19/169 ,  H04N19/15 ,  H04N19/174

    Abstract: Methods and devices for encoding a video stream are provided, a method includes storing previously decoded pictures of the video stream in a decoded picture buffer, including a plurality of first pictures of a same temporal sub-layer, the plurality of first pictures including at least one sub-layer reference picture for predicting a current picture of the video stream; identifying a network abstract layer (NAL) unit type of a picture of the plurality of first pictures; removing, based on the NAL unit type of the picture identified, the picture from the decoded picture buffer; and encoding the current picture using the decoded picture buffer. The encoding includes: predicting the current picture using one or more of the at least one sub-layer reference picture that is stored within the decoded picture buffer, after removing the picture from the decoded picture buffer.

    SUBPICTURE PARTITIONING AND SCALING WINDOW INFORMATION
    39.
    发明申请
    SUBPICTURE PARTITIONING AND SCALING WINDOW INFORMATION 有权

    公开(公告)号：US20230007305A1

    公开(公告)日：2023-01-05

    申请号：US17850608

    申请日：2022-06-27

    Applicant: Tencent America LLC

    Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Xiang LI ,  Shan LIU

    IPC: H04N19/70 ,  H04N19/44 ,  H04N19/172 ,  H04N19/167 ,  H04N19/119 ,  H04N19/30

    Abstract: Aspects of the disclosure provide a method, an apparatus, and non-transitory computer-readable storage medium for video decoding. The apparatus includes processing circuitry configured to decode at least one of a first flag or a second flag in a syntax structure for a first picture in a coded video sequence (CVS). The first flag can indicate whether first subpicture partitioning information of the first picture is signaled in the syntax structure. The second flag can indicate whether first subpicture scaling window information for a first subpicture included in the first picture is signaled in the syntax structure. The processing circuitry reconstructs the first subpicture based on the at least one of the first flag indicating that the first subpicture partitioning information of the first picture is signaled in the syntax structure or the second flag indicating that the first subpicture scaling window information for the first subpicture is signaled in the syntax structure.

    INDEPENDENT CODED REGION OUTPUT SUPPLEMENTARY ENHANCEMENT INFORMATION MESSAGE
    40.
    发明申请
    INDEPENDENT CODED REGION OUTPUT SUPPLEMENTARY ENHANCEMENT INFORMATION MESSAGE 有权

    公开(公告)号：US20220417544A1

    公开(公告)日：2022-12-29

    申请号：US17851723

    申请日：2022-06-28

    Applicant: Tencent America LLC

    Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Xiang LI ,  Shan LIU

    IPC: H04N19/44 ,  H04N19/176 ,  H04N19/172 ,  H04N19/46

    Abstract: Aspects of the disclosure provide a method, an apparatus, and non-transitory computer-readable storage medium for video decoding. The apparatus includes processing circuitry that is configured to decode a supplemental enhancement information (SEI) message that indicates independent region output information. The independent region output information indicates an independent region that is independently decodable in a current picture. The processing circuitry determines the independent region in the current picture based on offset information and dimension information of the independent region in the independent region output information. The processing circuitry decodes the determined independent region irrespective of whether the entire current picture is decoded. The processing circuitry outputs the decoded independent region based on a position indicated by the offset information and a size indicated by the dimension information of the independent region.

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