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    APPARATUS AND METHODS FOR COMPRESSING VIDEO CONTENT USING ADAPTIVE PROJECTION SELECTION
    63.
    发明申请
    APPARATUS AND METHODS FOR COMPRESSING VIDEO CONTENT USING ADAPTIVE PROJECTION SELECTION 审中-公开

    公开(公告)号：US20180084257A1

    公开(公告)日：2018-03-22

    申请号：US15466559

    申请日：2017-03-22

    Applicant: GoPro, Inc.

    Inventor： Adeel Abbas

    IPC: H04N19/154 ,  H04N19/176 ,  H04N19/146

    CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/147 ,  H04N19/597 ,  H04N19/85

    Abstract: Apparatus and methods for encoding panoramic content, such as by a wide field of view and large image size. In one implementation, a panoramic image may be mapped to a cube, equirectangular or any other projection e.g., icosahedron or octahedron. Projection may be selected adaptively based on evaluation of the panoramic content. Content evaluation may include obtaining rate distortion cost metric for a given projection configuration including projection type, projection arrangement, and projection orientation. Projection configuration with the lowest cost may be selected as target projection for encoding content. As content composition changes (e.g., object motion, texture presence and/or location) projection may be adaptively selected to match changes in the content. Adaptive content selection methodology may provide for a lower encoded bitrate for a given encoded quality and/or higher quality for a given bitrate.

    APPARATUS AND METHODS FOR VIDEO COMPRESSION
    66.
    发明申请
    APPARATUS AND METHODS FOR VIDEO COMPRESSION 审中-公开

    公开(公告)号：US20170332107A1

    公开(公告)日：2017-11-16

    申请号：US15415603

    申请日：2017-01-25

    Applicant: GoPro, Inc.

    Inventor： Adeel Abbas ,  David Newman

    IPC: H04N19/86 ,  H04N19/66 ,  H04N19/65

    Abstract: Panoramic content may be characterized by a wide field of view and large image size. Panoramic image may be mapped to cube projection. When encoding/decoding cube-projected images, the disclosure exploits content continuity between cube facets. One facet may be encoded/decoded independently from other facets to obtain a seed facet. One or more transformed versions of the seed facet may be obtained, for example, one corresponding to a 90° counterclockwise rotation, another to a 90° clockwise rotation, and one to an 180° rotation. Transformed versions may be used to form an augmented image. The remained facets of the cube may be encoded using transformed versions within the augmented image. Boundary filtering may be applied to one or more edges of one or more facets.

    SYSTEMS AND METHODS FOR SPATIALLY ADAPTIVE VIDEO ENCODING
    67.
    发明申请
    SYSTEMS AND METHODS FOR SPATIALLY ADAPTIVE VIDEO ENCODING 审中-公开

    公开(公告)号：US20170237983A1

    公开(公告)日：2017-08-17

    申请号：US15334213

    申请日：2016-10-25

    Applicant: GoPro, Inc.

    Inventor： Balineedu Chowdary Adsumilli ,  Adeel Abbas ,  David Newman

    IPC: H04N19/124 ,  H04N19/154 ,  H04N19/17

    CPC classification number: H04N19/124 ,  H04N19/154 ,  H04N19/167 ,  H04N19/17 ,  H04N21/21805 ,  H04N21/234345 ,  H04N21/23439 ,  H04N21/816

    Abstract: Systems and methods for providing video content using spatially adaptive video encoding. Panoramic and/or virtual reality content may be viewed by a client device using a viewport with viewing dimension(s) configured smaller than available dimension(s) of the content. Client device may include a portable media device characterized by given energy and/or computational resources. Video content may be encoded using spatially varying encoding. For image playback, portions of panoramic image may be pre-encoded using multiple quality bands. Pre-encoded image portions, matching the viewport, may be provided and reduce computational and/or energy load on the client device during consumption of panoramic content. Quality distribution may include gradual quality transition area allowing for small movements of the viewport without triggering image re-encoding. Larger movements of the viewport may automatically trigger transition to another spatial encoding distribution.

    APPARATUS AND METHODS FOR THE OPTIMAL STITCH ZONE CALCULATION OF A GENERATED PROJECTION OF A SPHERICAL IMAGE
    70.
    发明申请
    APPARATUS AND METHODS FOR THE OPTIMAL STITCH ZONE CALCULATION OF A GENERATED PROJECTION OF A SPHERICAL IMAGE 有权

    公开(公告)号：US20230027366A1

    公开(公告)日：2023-01-26

    申请号：US17960040

    申请日：2022-10-04

    Applicant: GoPro, Inc.

    Inventor： Adeel Abbas ,  Timothy Macmillan ,  Cesar Douady-Pleven

    IPC: G06T3/00 ,  H04N5/232 ,  H04N5/225 ,  G06T3/40

    Abstract: Apparatus and methods for the stitch zone calculation of a generated projection of a spherical image. In one embodiment, a computing device is disclosed which includes logic configured to: obtain a plurality of images; map the plurality of images onto a spherical image; re-orient the spherical image in accordance with a desired stitch line and a desired projection for the desired stitch line; and map the spherical image to the desired projection having the desired stitch line. In a variant, the desired stitch line is mapped onto an optimal stitch zone, the optimal stitch zone characterized as a set of points that defines a single line on the desired projection in which the set of points along the desired projection lie closest to the spherical image in a mean square sense.

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