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    IMPLEMENTATION OF AN ATLAS-SPACE SHADOW MASK
    11.
    发明申请
    IMPLEMENTATION OF AN ATLAS-SPACE SHADOW MASK 有权

    公开(公告)号：US20210304483A1

    公开(公告)日：2021-09-30

    申请号：US16828808

    申请日：2020-03-24

    Applicant: QUALCOMM Incorporated

    Inventor： Joseph Daniel Garvey ,  Dieter Schmalstieg ,  Bojan Vrcelj

    IPC: G06T15/00 ,  G06T7/37 ,  G06T15/04 ,  G06T15/60 ,  G06T7/507 ,  G06T7/529

    Abstract: Methods, systems, and devices for computer graphics are described. A device may perform a shadow rendering operation in an object-space shading pipeline for a set of potentially visible surfaces. The device may represent the potentially visible surfaces in an atlas. The device may determine a set of world-space coordinates corresponding to the one or more potentially visible surfaces and may store the set of world-space coordinates in a geometry buffer (G-buffer). The device may determine a number of shadow factors associated with the potentially visible surfaces based on a transformation of the world-space coordinates stored in the G-buffer and a set of depth values associated with each shadow caster present in a scene. The device may store the shadow factors in an atlas shadow mask and perform a shading of the potentially visible surfaces in the atlas based on the atlas shadow mask.

    Error concealment in split rendering using shading atlases
    15.
    发明授权
    Error concealment in split rendering using shading atlases 有权

    公开(公告)号：US11514641B2

    公开(公告)日：2022-11-29

    申请号：US17190758

    申请日：2021-03-03

    Applicant: QUALCOMM Incorporated

    Inventor： Joseph Daniel Garvey ,  Bojan Vrcelj

    IPC: G06T15/80 ,  G02B27/01 ,  G06T19/00 ,  G06T5/00

    Abstract: A client device of a split rendering graphics processing architecture, receives an encoded shading atlas for a current frame. The encoded shading atlas is characterized by slices. The client decodes the received encoded shading atlas and identifies unsuccessfully decoded slices. The client then determines whether each patch of the decoded shading atlas intersects an identified unsuccessfully decoded slice. The client determines, for each intersecting patch, whether a prior valid version of each intersecting patch is stored at the client device. The client error conceals each intersecting patch having a prior valid version stored at the client device with the corresponding prior valid version to create an error concealed atlas. The client renders the current frame using the error concealed atlas.

    Error concealment in split rendering
    16.
    发明授权
    Error concealment in split rendering 有权

    公开(公告)号：US11321905B2

    公开(公告)日：2022-05-03

    申请号：US17037566

    申请日：2020-09-29

    Applicant: QUALCOMM Incorporated

    Inventor： Mina Ayman Saleh Yanni Makar ,  Soumyajit Bijankumar Deb ,  Bojan Vrcelj ,  Arjun Sitaram ,  Dieter Schmalstieg

    IPC: G06T15/00 ,  G06T9/00

    Abstract: Graphics processing in a client device includes receiving, as part of a vector streaming split rendering process, a bit stream encoding a sequence of shading atlases of the process. Each shading atlas includes blocks. The client decodes a particular shading atlas of the sequence of shading atlases, and determines that a particular block of the particular shading atlas was unsuccessfully decoded. The client identifies a stored block of a prior shading atlas of the sequence of shading atlases as a successfully decoded earlier version of the particular block. The client renders the particular shading atlas using the stored block instead of the particular block.

    Compression of point clouds via a novel hybrid coder
    18.
    发明授权
    Compression of point clouds via a novel hybrid coder 有权

    公开(公告)号：US10796458B2

    公开(公告)日：2020-10-06

    申请号：US15959359

    申请日：2018-04-23

    Applicant: QUALCOMM Incorporated

    Inventor： Vinay Melkote Krishnaprasad ,  Ajit Venkat Rao ,  Bojan Vrcelj ,  Dieter Schmalstieg

    IPC: G06T9/00 ,  G06T9/40 ,  G06T17/00 ,  H04N19/94 ,  H04N19/597

    Abstract: Aspects of the present disclosure provide a method for compressing a point cloud. The method includes determining a sub-division technique for the volume based on one or more numbers derived from a distribution of points in the volume, dividing the volume into a number of sub-volumes according to the sub-division technique, and determining whether each sub-volume of the sub-volumes is occupied by at least one point. The method includes generating a bit sequence for the volume comprising a control code that is based on the sub-division technique and an occupancy indicator that indicates whether or not each sub-volume is occupied by at least one point.

    REAL-TIME TRANSPORT PROTOCOL HEADER EXTENSION FOR IN-BAND DELAY MEASUREMENT
    19.
    发明公开
    REAL-TIME TRANSPORT PROTOCOL HEADER EXTENSION FOR IN-BAND DELAY MEASUREMENT 审中-公开

    公开(公告)号：US20240340229A1

    公开(公告)日：2024-10-10

    申请号：US18347977

    申请日：2023-07-06

    Applicant: QUALCOMM Incorporated

    Inventor： Liangping Ma ,  Imed Bouazizi ,  Bojan Vrcelj ,  Lenaig Genevieve Chaponniere ,  Aytac Biber

    IPC: H04L43/0852 ,  H04L69/22

    CPC classification number: H04L43/0858 ,  H04L69/22

    Abstract: Example in-band delay measurement techniques are described. An example first computing device transmits, to a second computing device, a first data packet, the first data packet including a first time indicator and at least one header extension element. The at least one header extension element includes a header extension element header, the header extension element header having a length of at least one byte. The first computing device receives, from the second computing device, a second data packet, the second data packet including a second time indicator. The first computing device determines a data packet delay associated with the first data packet based on the first time indicator and the second time indicator and transmits an indication of the data packet delay to at least one of the second computing device or a third computing device.

    Methods and apparatus for handling occlusions in split rendering
    20.
    发明授权
    Methods and apparatus for handling occlusions in split rendering 有权

    公开(公告)号：US11468629B2

    公开(公告)日：2022-10-11

    申请号：US17061179

    申请日：2020-10-01

    Applicant: QUALCOMM Incorporated

    Inventor： Bojan Vrcelj ,  Gerhard Reitmayr ,  Joseph Daniel Garvey

    IPC: G06T15/20 ,  G06T19/00 ,  G06T1/20 ,  G06T15/40

    Abstract: The present disclosure relates to methods and apparatus for graphics processing. Aspects of the present disclosure may identify a first content group and a second content group in a scene. Further, aspects of the present disclosure may determine whether at least a portion of the first content group occludes or potentially occludes at least a portion of the second content group. Additionally, the present disclosure may represent the first content group and the second content group based on the determination whether at least a portion of the first content group occludes or potentially occludes at least a portion of the second content group. In some aspects, the first content group may include at least some real content and the second content group includes at least some augmented content. The present disclosure may also render at least a portion of surfaces of the first content group using an occlusion material.

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