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    EXTENDED REALITY ANCHOR CACHING BASED ON VIEWPORT PREDICTION
    11.
    发明申请
    EXTENDED REALITY ANCHOR CACHING BASED ON VIEWPORT PREDICTION 有权

    公开(公告)号：US20220254113A1

    公开(公告)日：2022-08-11

    申请号：US17660620

    申请日：2022-04-25

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Tan Xu ,  David Crawford Gibbon ,  Bo Han ,  Eric Zavesky

    IPC: G06T19/00 ,  G06F3/01 ,  G02B27/01 ,  G06V20/20

    Abstract: A processing system of a mobile device may determine the device's predicted viewport, which defines a portion of a real world environment that is expected to be visible to the device's user at a future time. The processing system may determine a set of extended reality anchors that are present in the real world environment, where each anchor stores a digital object that, when rendered by the device and presented to the user simultaneously with the real world environment, creates extended reality media. The processing system may remove a first subset anchors from the set, where locations of anchors in the first subset fall outside a threshold distance from the predicted viewport. The removing results in a second subset of anchors remaining in the set. The processing system may download a digital object from a second device, where the digital object is stored by an anchor of the second subset.

    Viewport-based transcoding for immersive visual streams
    12.
    发明授权
    Viewport-based transcoding for immersive visual streams 有权

    公开(公告)号：US11381817B2

    公开(公告)日：2022-07-05

    申请号：US16580903

    申请日：2019-09-24

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Bo Han ,  Tan Xu ,  Zhengye Liu

    IPC: H04N19/597 ,  H04N19/167 ,  H04N19/119 ,  H04N19/20 ,  G06N20/00 ,  H04N19/176 ,  G06N5/04 ,  H04N19/162

    Abstract: In one example, a processing system including at least one processor may obtain a predicted viewport of a mobile computing device for an immersive visual stream, identify a first plurality of blocks of a frame of the immersive visual stream that are associated with the predicted viewport, encode the first plurality of blocks at a first encoding quality level, and encode a second plurality of blocks of the frame at a second encoding quality level, where the second encoding quality level is associated with a lesser visual quality as compared to the first encoding quality level and where the second plurality of blocks are outside of the predicted viewport. The processing system may then transmit the frame having the first plurality of blocks encoded at the first encoding quality level and the second plurality of blocks encoded at the second encoding quality level to the mobile computing device.

    System and method of enabling adaptive bitrate streaming for volumetric videos
    17.
    发明授权
    System and method of enabling adaptive bitrate streaming for volumetric videos 有权

    公开(公告)号：US11190771B2

    公开(公告)日：2021-11-30

    申请号：US16820080

    申请日：2020-03-16

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Bo Han ,  Cheuk Yiu Ip ,  Jackson Jarrell Pair

    IPC: H04N19/132 ,  H04N19/184 ,  H04N19/30 ,  H04N19/146

    Abstract: Aspects of the subject disclosure may include, for example, a device that has a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations including selecting a downsampling technique for removing points from a point cloud in a volumetric video; selecting a data reduction percentage for a target bitrate for streaming the volumetric video; downsampling the point cloud in each frame of the volumetric video for the target bitrate using the downsampling technique and data reduction percentage selected, thereby creating a downsampled volumetric video; and compressing and encoding the downsampled volumetric video, thereby creating an encoded volumetric video. Other embodiments are disclosed.

    APPARATUSES AND METHODS FOR ENHANCING A PRESENTATION OF CONTENT WITH SURROUNDING SENSORS
    19.
    发明申请
    APPARATUSES AND METHODS FOR ENHANCING A PRESENTATION OF CONTENT WITH SURROUNDING SENSORS 有权

    公开(公告)号：US20210279768A1

    公开(公告)日：2021-09-09

    申请号：US16812486

    申请日：2020-03-09

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Tan Xu ,  Bo Han ,  Eric Zavesky

    IPC: G06Q30/02 ,  G06T19/00 ,  H04W4/02

    Abstract: Aspects of the subject disclosure may include, for example, obtaining an identification of a device capability associated with a client device that is presenting a first scene that includes a first physical object and a first virtual object, determining a first location of the client device, responsive to the determining of the first location, obtaining an output from a sensor that is located within a threshold distance of the first location, processing the output from the sensor to identify a second virtual object in accordance with the identification of the device capability, and transmitting first data associated with the second virtual object to cause the client device to present the first physical object and the second virtual object in a second scene. Other embodiments are disclosed.

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