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    ADJUSTING FIELD OF VIEW OF TRUNCATED SQUARE PYRAMID PROJECTION FOR 360-DEGREE VIDEO
    2.
    发明申请
    ADJUSTING FIELD OF VIEW OF TRUNCATED SQUARE PYRAMID PROJECTION FOR 360-DEGREE VIDEO 审中-公开

    公开(公告)号：US20180199029A1

    公开(公告)日：2018-07-12

    申请号：US15862468

    申请日：2018-01-04

    Applicant: QUALCOMM Incorporated

    Inventor： Geert VAN DER AUWERA ,  Muhammed COBAN

    IPC: H04N13/161 ,  H04N13/00

    CPC classification number: H04N13/363 ,  G06T3/00 ,  H04N5/2628 ,  H04N13/111 ,  H04N13/161

    Abstract: Techniques and systems are described for encoding 360-degree video data using the planes of a truncated square pyramid to map the 360-degree data for different fields of view. 360-degree video data can include multiple frames, where each frame includes spherical video data. In various implementations, a video coding system can select a field of view for the video data, and determine an offset from the center of the spherical video data that corresponds to the field of view. Using the offset, the system can determine a projection of the spherical video data onto the planes of the truncated square pyramid, where the base plane represents a front view and the top plane represents a back view. The system can then map the video data according to the projection such that each plane of the truncated square pyramid includes a portion of the spherical video data.

    REDUCING SEAM ARTIFACTS IN 360-DEGREE VIDEO
    3.
    发明申请
    REDUCING SEAM ARTIFACTS IN 360-DEGREE VIDEO 审中-公开

    公开(公告)号：US20190005683A1

    公开(公告)日：2019-01-03

    申请号：US16020374

    申请日：2018-06-27

    Applicant: Qualcomm Incorporated

    Inventor： Geert VAN DER AUWERA ,  Muhammed COBAN ,  Marta KARCZEWICZ

    IPC: G06T9/40 ,  H04L1/00 ,  H04N19/119 ,  G06T3/00

    Abstract: Provided are systems and methods for processing 360-degree video data by obtaining a 360-degree rectangular formatted projected picture, where the 360-degree rectangular formatted projected picture includes at least a first region, the at least first region includes at least one region boundary, and the at least first region includes a first region area; determining at least one guard band area located within the first region area, where the at least one guard band area is located alongside the at least one region boundary, and the first region area further includes a projected region area located outside the at least one guard band area; and coding a current coding block in the at least one guard band area using at least one additional guard band sample.

    VIEWPORT-AWARE QUALITY METRIC FOR 360-DEGREE VIDEO
    4.
    发明申请
    VIEWPORT-AWARE QUALITY METRIC FOR 360-DEGREE VIDEO 审中-公开

    公开(公告)号：US20180164593A1

    公开(公告)日：2018-06-14

    申请号：US15833786

    申请日：2017-12-06

    Applicant: QUALCOMM Incorporated

    Inventor： Geert VAN DER AUWERA ,  Muhammed COBAN

    IPC: G02B27/01 ,  G06F3/01

    Abstract: Techniques and systems are provided for processing 360-degree video data. For example, 360-degree video data can be obtained that includes a representation including spherical video data mapped to faces of a geometry. The representation includes a viewport corresponding to an orientation in a 360-degree scene. A window can be determined on a spherical representation of the 360-degree scene at the orientation corresponding to the viewport of the representation. The window is determined based on a front face of the geometry corresponding to the representation. A viewport-aware quality metric can then be determined for the window on the spherical representation of the 360-degree scene.

    ADAPTIVE PERTURBED CUBE MAP PROJECTION
    8.
    发明申请
    ADAPTIVE PERTURBED CUBE MAP PROJECTION 审中-公开

    公开(公告)号：US20180268517A1

    公开(公告)日：2018-09-20

    申请号：US15925681

    申请日：2018-03-19

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammed COBAN ,  Geert VAN DER AUWERA ,  Marta KARCZEWICZ

    IPC: G06T3/00 ,  G06F17/17 ,  H04N19/172 ,  H04N19/174

    CPC classification number: G06T3/0087 ,  G06F17/17 ,  G06T3/0093 ,  G06T15/205 ,  G06T17/00 ,  G06T2207/10016 ,  H04N19/172 ,  H04N19/174 ,  H04N19/597 ,  H04N19/85

    Abstract: Methods and systems for processing video data are provided. For example, a video bitstream can be obtained that includes a video frame of a spherical representation of 360-degree video data. The video frame can include a planar surface of a geometry, and the planar surface can include a plurality of pixels. Three-dimensional coordinates of a target point of the spherical representation can be determined. A planar surface of the geometry to which the target point is to be mapped can also be determined. The planar surface can be determined based on the three-dimensional coordinates of the target point. Two-dimensional coordinates of a mapping location on the planar surface to which the target point is to be mapped can be determined based on the three-dimensional coordinates of the target point and an adaptation parameter. A pixel value can then be generated based on one or more pixels associated with the mapping location. The pixel value can be assigned to the target point.

    ADAPTIVE PERTURBED CUBE MAP PROJECTION
    9.
    发明申请
    ADAPTIVE PERTURBED CUBE MAP PROJECTION 审中-公开

    公开(公告)号：US20180268516A1

    公开(公告)日：2018-09-20

    申请号：US15925674

    申请日：2018-03-19

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammed COBAN ,  Geert VAN DER AUWERA ,  Marta KARCZEWICZ

    IPC: G06T3/00 ,  G06F17/17 ,  H04N19/172 ,  H04N19/174

    CPC classification number: G06T3/0087 ,  G06F17/17 ,  G06T3/0093 ,  G06T15/205 ,  G06T17/00 ,  G06T2207/10016 ,  H04N19/172 ,  H04N19/174 ,  H04N19/597 ,  H04N19/85

    Abstract: Methods and systems for processing video data are provided. In one example, a first video bitstream can be obtained, which can include video frames of a spherical representation of 360-degree video data. Two-dimensional pixel coordinates of a pixel location of a planar surface of a geometry can be determined. The planar surface can be part of a plurality of planar surfaces of the geometry. Two-dimensional normalized coordinates can be determined for the pixel location based on an adaptation parameter and the two-dimensional pixel coordinates. Three-dimensional coordinates of a sample point of the spherical representation of the 360-degree video data can be determined based on the two-dimensional normalized coordinates. A pixel value for the pixel location of the planar surface of the geometry can be determined based on the sample point, and a second video bitstream can be generated that includes pixel values determined for pixel locations of the plurality of planar surfaces of the geometry.

    REDUCING SEAM ARTIFACTS IN 360-DEGREE VIDEO
    10.
    发明申请
    REDUCING SEAM ARTIFACTS IN 360-DEGREE VIDEO 审中-公开

    公开(公告)号：US20190007683A1

    公开(公告)日：2019-01-03

    申请号：US16020526

    申请日：2018-06-27

    Applicant: Qualcomm Incorporated

    Inventor： Geert VAN DER AUWERA ,  Muhammed COBAN ,  Marta KARCZEWICZ

    IPC: H04N19/124 ,  H04N19/122 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/172

    Abstract: Provided are systems and methods for processing 360-degree video data by obtaining a 360-degree rectangular formatted projected picture, the 360-degree rectangular formatted projected picture including a first region with a region boundary and a first region area; identifying coding tree units (CTUs) within the first region area; selectively identifying a first coding unit (CU) and a second CU from within the CTUs; determining an initial QP value for the first CU; determining an initial QP value for the second CU; identifying the first CU as a region boundary CU; identifying the second CU as a non-region boundary CU; reducing the initial QP value for the first CU to a final first QP value in response to identifying the first CU as a region boundary CU, and generating an encoded video bitstream comprising: the final QP value for the first CU, and the initial QP value for the second CU.

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