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    Concept for determining a measure for a distortion change in a synthesized view due to depth map modifications
    3.
    发明授权
    Concept for determining a measure for a distortion change in a synthesized view due to depth map modifications 有权

    公开(公告)号：US11350075B2

    公开(公告)日：2022-05-31

    申请号：US17080001

    申请日：2020-10-26

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Gerhard Tech ,  Karsten Mueller ,  Thomas Wiegand

    IPC: H04N13/161 ,  H04N13/122 ,  H04N13/111 ,  H04N13/128 ,  G06T15/20

    Abstract: An apparatus for determining a measure for a distortion change of a first view synthesized from a second view, caused by a modification of a depth map of the second view from a first state to a second state, is configured—starting from a current synthesis state of the first view corresponding to a synthesis from the second view having the depth map modified to the second state in an already processed portion of the depth map and having the depth map unmodified at the first state in a yet to be processed portion of the depth map—to compute a possible successor synthesis state corresponding to a synthesis of the first view from the second view having the depth map modified to the second state in an already processed portion plus a currently processed portion and having the depth map unmodified at the first state in the yet to be processed portion without the currently processed portion; and to determine a distortion change of a distortion of the current synthesis state of the first view relative to an undistorted version of the first view to a distortion of the possible successor synthesis state of the first view relative to the undistorted version of the first view.

    Wedgelet-based coding concept
    7.
    发明授权
    Wedgelet-based coding concept 有权

    公开(公告)号：US10244235B2

    公开(公告)日：2019-03-26

    申请号：US15198029

    申请日：2016-06-30

    Applicant: GE Video Compression, LLC

    Inventor： Philipp Merkle ,  Detlev Marpe ,  Karsten Mueller

    IPC: H04N19/13 ,  H04N19/463 ,  H04N19/91 ,  H04N19/176 ,  H04N19/119

    Abstract: Wedgelet-based coding in conjunction with the usage of coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi-partitioning of the current coding block to the actual needs, namely the size, of the current coding block, and the variability of the bi-partitioning by varying the wedglet separation line, respectively. The greater the current coding block is, the longer the variable-length coded syntax element may be. This length dependency may even be sufficiently effective in terms of coding efficiency so that the variable length coded syntax element may be coded without context-adaptive entropy coding, but directly or using fixed-equal-probability binary entropy coding.

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