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    Object tracking in multi-view video
    122.
    发明授权
    Object tracking in multi-view video 有权

    公开(公告)号：US11093752B2

    公开(公告)日：2021-08-17

    申请号：US15613130

    申请日：2017-06-02

    Applicant: Apple Inc.

    Inventor： Jae Hoon Kim ,  Ming Chen ,  Hang Yuan ,  Jiefu Zhai ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Chung ,  Hsi-Jung Wu

    IPC: G06K9/00 ,  G06T7/292 ,  G06K9/32

    Abstract: Techniques are disclosed for managing display of content from multi-view video data. According to these techniques, an object may be identified from content of the multi-view video. The object's location may be tracked across a sequence of multi-view video. The technique may extract a sub-set of video that is contained within a view window that is shifted in an image space of the multi-view video in correspondence to the tracked object's location. These techniques may be implemented either in an image source device or an image sink device.

    Point cloud compression with adaptive filtering
    123.
    发明授权
    Point cloud compression with adaptive filtering 有权

    公开(公告)号：US11017566B1

    公开(公告)日：2021-05-25

    申请号：US16459483

    申请日：2019-07-01

    Applicant: Apple Inc.

    Inventor： Alexandros Tourapis ,  Khaled Mammou ,  Yeping Su ,  Jungsun Kim ,  Valery G. Valentin ,  David W. Singer ,  Fabrice A. Robinet ,  Hsi-Jung Wu

    IPC: G06T9/00 ,  G06T3/40 ,  H03M7/30 ,  G06T17/20

    Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. A processing/filtering element utilizes occupancy map information and/or auxiliary patch information to determine relationships between patches in image frames and adjusts encoding/decoding and/or filtering or pre/post-processing parameters based on the determined relationships.

    Scalability of multi-directional video streaming
    124.
    发明授权
    Scalability of multi-directional video streaming 有权

    公开(公告)号：US10999583B2

    公开(公告)日：2021-05-04

    申请号：US16132219

    申请日：2018-09-14

    Applicant: Apple Inc.

    Inventor： Alexandros Tourapis ,  Dazhong Zhang ,  Hang Yuan ,  Hsi-Jung Wu ,  Jae Hoon Kim ,  Jiefu Zhai ,  Ming Chen ,  Xiaosong Zhou

    IPC: H04N19/29 ,  H04N19/103 ,  G09G5/14 ,  H04N21/44

    Abstract: Aspects of the present disclosure provide techniques for reducing latency and improving image quality of a viewport extracted from multi-directional video communications. According to such techniques, first streams of coded video data are received from a source. The first streams include coded data for each of a plurality of tiles representing a multi-directional video, where each tile corresponding to a predetermined spatial region of the multi-directional video, and at least one tile of the plurality of tiles in the first streams contains a current viewport location at a receiver. The techniques include decoding the first streams and displaying the tile containing the current viewport location. When the viewport location at the receiver changes to include a new tile of the plurality of tiles, retrieving and decoding first streams for the new tile, displaying the decoded content for the changed viewport location, and transmitting the changed viewport location to the source.

    Versatile tile coding for multi-view video streaming
    126.
    发明授权
    Versatile tile coding for multi-view video streaming 有权

    公开(公告)号：US10972753B1

    公开(公告)日：2021-04-06

    申请号：US16569725

    申请日：2019-09-13

    Applicant: Apple Inc.

    Inventor： Fanyi Duanmu ,  Eduardo Asbun ,  Xiaosong Zhou ,  Jun Xin ,  Hsi-Jung Wu ,  John Su ,  Samir Gehani ,  Christopher Flick ,  Shalini Sahoo

    IPC: H04N19/597 ,  H04N19/187 ,  H04N19/176

    Abstract: Techniques are disclosed for coding and delivering multi-view video in which the video is represented as a manifest file identifying a plurality of segments of the video available for download. The multi-view video may be partitioned spatially into a plurality of tiles that, in aggregate, encompass the entire spatial area of the video. The tiles are coded as segments contains coded video representing content contained within its respective tile. Tiles may be given different sizes based on saliency of the content within their respective regions. In this manner, tiles with high levels of interest may have relatively large spatial areas, which can lead to efficient coding in the presence of content motion.

    POINT CLOUD COMPRESSION WITH MULTI-LAYER PROJECTION
    127.
    发明申请
    POINT CLOUD COMPRESSION WITH MULTI-LAYER PROJECTION 有权

    公开(公告)号：US20210012536A1

    公开(公告)日：2021-01-14

    申请号：US17032711

    申请日：2020-09-25

    Applicant: Apple Inc.

    Inventor： Khaled Mammou ,  Yeping Su ,  David W. Singer ,  Alexandros Tourapis ,  Fabrice A. Robinet ,  Hsi-Jung Wu

    IPC: G06T9/00 ,  G06T7/20 ,  G06T7/50 ,  H04N19/172

    Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. The encoder is configured project the point cloud on to patch planes to compress the point cloud, and supports multiple layered patch planes. For example, some point clouds may have a depth, and points at different depths may be assigned to different layered patch planes.

    Point cloud occupancy map compression
    129.
    发明授权
    Point cloud occupancy map compression 有权

    公开(公告)号：US10699444B2

    公开(公告)日：2020-06-30

    申请号：US16198635

    申请日：2018-11-21

    Applicant: Apple Inc.

    Inventor： Khaled Mammou ,  Yeping Su ,  David W. Singer ,  Alexandros Tourapis ,  Fabrice A. Robinet ,  Hsi-Jung Wu

    IPC: G06T7/20 ,  G06T9/00 ,  G06T7/70 ,  G06T7/50

    Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. A block/sub-block organization scheme is used to encode blocks and sub-blocks of an occupancy map used in compressing the point cloud. Binary values are assigned to blocks/sub-blocks based on whether they contain patches projected on the point cloud. A traversal path is chosen that takes advantage of run-length encoding strategies to reduce a size of an encoded occupancy map. Also, auxiliary information is used to further improve occupancy map compression.

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