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    VIRTUAL REALITY VIDEO SIGNALING IN DYNAMIC ADAPTIVE STREAMING OVER HTTP
    272.
    发明申请
    VIRTUAL REALITY VIDEO SIGNALING IN DYNAMIC ADAPTIVE STREAMING OVER HTTP 审中-公开

    公开(公告)号：US20200351572A1

    公开(公告)日：2020-11-05

    申请号：US16678698

    申请日：2019-11-08

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang

    IPC: H04N21/81 ,  H04N21/2343 ,  H04N21/845 ,  H04N19/70 ,  H04N19/597 ,  H04N21/218 ,  H04N21/262 ,  G06T9/00 ,  H04L29/06 ,  H04L29/08 ,  H04N21/438 ,  H04N21/44

    Abstract: A device for processing media data is configured to receive media data including virtual reality (VR) video data; determine, based at least in part on data signaled at an adaptation set level of a media presentation description for a media presentation, a projection mapping used in the media presentation; process segments of a video representation of the media presentation based on the projection mapping used in the media presentation. A device for processing media data is configured to generate media data that includes VR video data; include in the media data, data signaled at an adaptation set level of a media presentation description that identifies a projection mapping used in media presentation included in the media data; and send segments of a video representation of the media presentation based on the projection mapping used in the media presentation.

    Signaling of parameter sets in files of multi-layer bitstreams
    276.
    发明授权
    Signaling of parameter sets in files of multi-layer bitstreams 有权

    公开(公告)号：US10306253B2

    公开(公告)日：2019-05-28

    申请号：US15274544

    申请日：2016-09-23

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Fnu Hendry

    IPC: H04N19/46 ,  H04N19/30 ,  H04N19/187 ,  H04N19/177 ,  H04N19/70 ,  H04N19/50 ,  H04N21/854 ,  H04N19/169

    Abstract: A device generates, stores, or obtains a file that complies with a restriction specified in a file format to which the file conforms. The restriction requires that for each respective Intra Random Access Point (IRAP) picture, a parameter set required for decoding the respective IRAP picture is in at least one of the following: a sample entry of the respective IRAP picture's track that is applicable to the respective IRAP picture's sample, a sample entry of a non-corresponding track for the respective IRAP picture carrying a reference layer of the respective IRAP picture's layer, the respective IRAP picture's sample, or a temporally collocated sample of the respective IRAP picture's sample in a track of that carries the reference layer.

    HIGH-LEVEL SIGNALLING FOR FISHEYE VIDEO DATA
    278.
    发明申请
    HIGH-LEVEL SIGNALLING FOR FISHEYE VIDEO DATA 审中-公开

    公开(公告)号：US20180343472A1

    公开(公告)日：2018-11-29

    申请号：US15987231

    申请日：2018-05-23

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Ning Bi ,  Bijan Forutanpour

    IPC: H04N19/70 ,  H04N19/46 ,  H04N19/176

    Abstract: An example method includes processing a file including fisheye video data, the file including a syntax structure including a plurality of syntax elements that specify attributes of the fisheye video data, wherein the plurality of syntax elements includes: a first syntax element that explicitly indicates whether the fisheye video data is monoscopic or stereoscopic, and one or more syntax elements that implicitly indicate whether the fisheye video data is monoscopic or stereoscopic; determining, based on the first syntax element, whether the fisheye video data is monoscopic or stereoscopic; and rendering, based on the determination, the fisheye video data as monoscopic or stereoscopic.

    CODING MCTS-NESTED SEI MESSAGES
    279.
    发明申请
    CODING MCTS-NESTED SEI MESSAGES 审中-公开

    公开(公告)号：US20180255323A1

    公开(公告)日：2018-09-06

    申请号：US15909597

    申请日：2018-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang

    IPC: H04N19/70 ,  H04N19/55 ,  H04N19/169

    Abstract: An example device for processing video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to decode a supplemental enhancement information (SEI) network abstraction layer (NAL) unit of a video bitstream including the video data, the SEI NAL unit containing a motion constrained tile sets (MCTS) nesting SEI message; determine that the SEI NAL unit does not contain any non-MCTS-nesting SEI messages in response to the SEI NAL unit containing the MCTS nesting SEI message; and decode subsequent SEI messages of the SEI NAL unit as MCTS nesting SEI messages in response to the determination.

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