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    REGIONAL RANDOM ACCESS IN PICTURES
    1.
    发明申请
    REGIONAL RANDOM ACCESS IN PICTURES 有权

    公开(公告)号：US20220159272A1

    公开(公告)日：2022-05-19

    申请号：US17532920

    申请日：2021-11-22

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: H04N19/167 ,  H04N19/70 ,  H04N19/597 ,  H04N19/68 ,  H04N19/176

    Abstract: In general, the disclosure to techniques for regional random access within a picture of video data. For example, a video coding device receives a plurality of pictures in a coding order. Each respective picture of the plurality of pictures comprises a plurality of regions. For a first region in a first picture of the plurality of pictures, the video coding device determines that the first region is codable independent from each other region of the first picture and from a first region in a second picture preceding the first picture in the coding order and, responsive to making such a determination, determine that the first region in the first picture has random accessibility. The video coding device codes each video block in the first region independent from any video blocks outside of the first region.

    Intra prediction for 360-degree video
    2.
    发明授权
    Intra prediction for 360-degree video 有权

    公开(公告)号：US10764605B2

    公开(公告)日：2020-09-01

    申请号：US16271065

    申请日：2019-02-08

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Geert Van der Auwera ,  Muhammed Zeyd Coban ,  Marta Karczewicz

    IPC: H04N19/597 ,  H04N19/593 ,  H04N19/176 ,  H04N19/105 ,  H04N5/232 ,  H04N19/11

    Abstract: A video coder may determine reference samples based on a location of a current block of a current picture of the 360-degree video data and a packing arrangement that defines an arrangement of a plurality of regions in the current picture. The current picture is in a projected domain and each respective region of the plurality of regions is a respective face defined by a projection of 360-degree video data. The regions are arranged in the current picture according to the packing arrangement. Based on the location of the current block being at a border of the first region that is adjacent to the second region and there being a discontinuity at the border due to the packing arrangement, the reference samples are samples of the current picture that spatially neighbor the current block in a spherical domain and not in the projected domain.

    Motion compensation for cubemap packed frames
    3.
    发明授权
    Motion compensation for cubemap packed frames 有权

    公开(公告)号：US10721465B2

    公开(公告)日：2020-07-21

    申请号：US16274889

    申请日：2019-02-13

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammed Zeyd Coban ,  Geert Van der Auwera ,  Fnu Hendry ,  Marta Karczewicz

    IPC: H04N19/105 ,  H04N19/513 ,  H04N19/563 ,  H04N19/176 ,  H04N19/159 ,  H04N19/46 ,  H04N19/70 ,  H04N19/597

    Abstract: A device for decoding 360-degree video data is configured to store a decoded picture of 360-degree video as a reference frame; derive an extended reference frame from the stored reference frame based on a padding amount by extending a first cube face in the reference frame; inter-predict a block of a current picture from a block of the extended reference frame by determining a motion vector for the block of the current picture; in response to a determination that the motion vector points to a cube face in the extended reference frame other than the first cube face, clipping the motion vector such that the motion vector points to a location in the first cube face; and locating a prediction block for a current block using the clipped motion vector.

    Sample grouping signaling in file formats
    7.
    发明授权
    Sample grouping signaling in file formats 有权

    公开(公告)号：US09928297B2

    公开(公告)日：2018-03-27

    申请号：US14969954

    申请日：2015-12-15

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: G06F17/30 ,  H04N19/70 ,  H04N19/46 ,  H04N19/50 ,  H04N19/85 ,  H04N21/854

    CPC classification number: G06F17/30784 ,  H04N19/46 ,  H04N19/50 ,  H04N19/70 ,  H04N19/85 ,  H04N21/85406

    Abstract: A device generates, in a container box of a file for storage of video contents, a SampleGroupDescription box that provides a sample group description for a sample grouping. The SampleGroupDescription box includes a grouping type syntax element having a particular value. Additionally, the SampleGroupDescription box includes one or more sample group entries. The device generates, in the same container box, a plurality of SampleToGroup boxes. Each respective SampleToGroup box of the plurality of SampleToGroup boxes includes a respective grouping type syntax element having the particular value, includes a respective sample count syntax element indicating a number of samples in a respective sample grouping, and includes a respective group description index syntax element indicating an index of an entry in the SampleGroupDescription box which describes samples of the respective sample grouping. Each sample of the respective sample grouping comprises a respective picture of the video contents.

    Support of base layer of a different codec in multi-layer video coding
    8.
    发明授权
    Support of base layer of a different codec in multi-layer video coding 有权

    公开(公告)号：US09832481B2

    公开(公告)日：2017-11-28

    申请号：US14584473

    申请日：2014-12-29

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Jianle Chen ,  Ying Chen ,  Fnu Hendry

    IPC: H04N19/58 ,  H04N19/52 ,  H04N19/70 ,  H04N19/33

    CPC classification number: H04N19/52 ,  H04N19/33 ,  H04N19/58 ,  H04N19/70

    Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor. The memory unit is configured to store video information associated with an enhancement layer (EL) and a corresponding reference layer (RL). The processor is configured to: code an EL picture in a current access unit (AU), the EL coded using a first standard that is different from a second standard that is used to code the RL, wherein the coding of the EL picture is based on information associated with a RL picture in the current access unit, the information associated with the RL picture provided by an external means and consisting of: (1) decoded sample values of the RL picture; (2) a representation format of the RL picture; and (3) an indication of whether the RL picture is an instantaneous decoding refresh (IDR) picture.

    TILE GROUPING IN HEVC AND L-HEVC FILE FORMATS
    10.
    发明申请
    TILE GROUPING IN HEVC AND L-HEVC FILE FORMATS 审中-公开

    公开(公告)号：US20170289556A1

    公开(公告)日：2017-10-05

    申请号：US15470148

    申请日：2017-03-27

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: H04N19/169 ,  H04N19/119 ,  H04N19/70

    CPC classification number: H04N19/188 ,  H04N19/119 ,  H04N19/30 ,  H04N19/70 ,  H04N21/85406

    Abstract: A device generates a Network Abstraction Layer (NAL) Unit Map Entry box in a file. The NAL Unit Map Entry box associates NAL units with a tile set that includes two or more tiles of a plurality of tiles into which a current picture is partitioned. A region of the current picture covered by the tile set may be non-rectangular. Additionally, the device generates a tile set group entry in the file. The tile set group entry includes a horizontal offset, a vertical offset, a width, and a height. The horizontal offset specifies a horizontal offset of a top-left pixel of a minimum rectangular region that covers tiles in the tile set. The vertical offset specifies a vertical offset of the top-left pixel of the minimum rectangular region. The width specifies a width of the minimum rectangular region. The height specifies a height of the minimum rectangular region.

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