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    Method and apparatus for performing non-separable transform based on modified intra prediction mode
    182.
    发明授权
    Method and apparatus for performing non-separable transform based on modified intra prediction mode 有权

    公开(公告)号：US11153560B2

    公开(公告)日：2021-10-19

    申请号：US17168571

    申请日：2021-02-05

    Applicant: LG ELECTRONICS INC.

    Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

    IPC: H04N19/11 ,  H04N19/176 ,  H04N19/61

    Abstract: Embodiments of the present invention provide a method and apparatus for processing a video signal. A method for decoding an image signal according to an embodiment of the present invention comprises the steps of: for a current block having a width and a height different from each other, determining a modified intra prediction mode from an intra prediction mode, on the basis of a ratio between the width and the height of the current block and the intra prediction mode; determining an inverse non-separable transform set on the basis of the modified intra prediction mode; and applying an inverse non-separable transform matrix selected from the inverse non-separable transform set with respect to the top-left region of the current block, which is determined according to the width and the height of the current block.

    METHOD FOR ENCODING/DECODING VIDEO SIGNALS AND DEVICE THEREFOR
    185.
    发明申请
    METHOD FOR ENCODING/DECODING VIDEO SIGNALS AND DEVICE THEREFOR 审中-公开

    公开(公告)号：US20200304818A1

    公开(公告)日：2020-09-24

    申请号：US16898117

    申请日：2020-06-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

    IPC: H04N19/44 ,  H04N19/70 ,  H04N19/625 ,  H04N19/159 ,  H04N19/176

    Abstract: A method and a device for processing a video signal are disclosed. In particular, a method for decoding a video signal includes parsing a first syntax element indicating a primary transform kernel applied to a primary transform of a current block; determining whether a secondary transform is applicable to the current block based on the first syntax element; if the secondary transform is applicable to the current block, parsing a second syntax element indicating a secondary transform kernel applied to a secondary transform of the current block; deriving a secondary inverse-transformed block, by performing a secondary inverse-transform for a top-left specific region of the current block using a secondary transform kernel indicated by the second syntax element; and deriving a residual block of the current block, by performing a primary inverse-transform for the secondary inverse-transformed block using a primary transform kernel indicated by the first syntax element.

    Method and apparatus for processing video signal
    190.
    发明授权
    Method and apparatus for processing video signal 有权
    视频信号处理方法及装置

    公开(公告)号：US09349192B2

    公开(公告)日：2016-05-24

    申请号：US14396686

    申请日：2013-04-24

    Applicant: LG ELECTRONICS INC.

    Inventor： Moonmo Koo ,  Jiwook Jung ,  Sehoon Yea ,  Jin Heo ,  Taesup Kim ,  Jaewon Sung ,  Eunyong Son

    IPC: G06T7/20 ,  H04N19/597 ,  H04N19/52 ,  G06K9/62 ,  G06T7/00 ,  H04N5/232 ,  G06T7/40

    CPC classification number: G06T7/2033 ,  G06K9/6201 ,  G06T7/40 ,  H04N5/23229 ,  H04N19/52 ,  H04N19/597

    Abstract: A method for processing a video signal according to the present invention comprises the steps of: determining a motion vector list comprising at least one of a spatial motion vector, a temporal motion vector, and a mutation vector as a motion vector candidate of a target block; extracting motion vector identification information for specifying the motion vector candidate to be used as a predicted motion vector of the target block; setting the motion vector candidate corresponding to the motion vector identification information as the predicted motion vector of the target block; and performing motion compensation based on the predicted motion vector. The present invention forms the motion vector candidate and derives the motion vector of the target and derives the motion vector of the target block therefrom, thus enabling a more accurate prediction of the motion vector, and thereby reduces the amount of transmitted residual data and improves coding efficiency.

    Abstract translation: 根据本发明的用于处理视频信号的方法包括以下步骤：确定包括空间运动矢量，时间运动矢量和突变矢量中的至少一个的运动矢量列表作为目标块的运动矢量候选 ; 提取用于指定要用作所述目标块的预测运动矢量的运动矢量候选的运动矢量识别信息; 将与运动矢量识别信息相对应的运动矢量候选设置为目标块的预测运动矢量; 并基于预测的运动矢量执行运动补偿。 本发明形成运动矢量候选，并导出目标的运动矢量，从而导出目标块的运动矢量，从而能够对运动矢量进行更精确的预测，从而减少发送的残留数据量并改进编码 效率。

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