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    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL
    3.
    发明申请
    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL 审中-公开

    公开(公告)号：US20180278961A1

    公开(公告)日：2018-09-27

    申请号：US15993229

    申请日：2018-05-30

    Applicant: LG Electronics Inc.

    Inventor： Jung Sun KIM ,  Seung Wook PARK ,  Young Hee CHOI ,  Jaewon SUNG ,  Byeong Moon JEON ,  Joon Young PARK

    IPC: H04N19/61 ,  H04N19/18 ,  H04N19/129 ,  H04N19/625 ,  H04N19/176 ,  H04N19/119 ,  H04N19/149 ,  H04N19/122

    CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/122 ,  H04N19/129 ,  H04N19/149 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625 ,  H05K999/99

    Abstract: The present invention relates to a method for decoding a video signal, comprising the steps of: acquiring a transform size flag of the current macroblock from a video signal; checking the number of non-zero transform coefficients at each pixel position in a first transform block which corresponds to the transform size flag; changing a scan order of the first transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients in the first transform block; determining the number of the non-zero transform coefficients at each pixel position in a second transform block, and setting the changed scan order of the first transform block as an initialized scan order of the second transform block; adding the number of the non-zero transform coefficients at each pixel position in the first transform block and the number of the non-zero transform coefficients at each pixel position in the second transform block, and changing the scan order of the second transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients; and decoding the transform coefficients arranged in the scan order changed in the previous step, wherein the first transform block and the second transform block have sizes corresponding to the transform size flag, and are contained in the current macroblock.

    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL
    5.
    发明申请
    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL 有权
    用于解码视频信号的方法和装置

    公开(公告)号：US20150249840A1

    公开(公告)日：2015-09-03

    申请号：US14711129

    申请日：2015-05-13

    Applicant: LG Electronics Inc.

    Inventor： Jung Sun KIM ,  Seung Wook PARK ,  Young Hee CHOI ,  Jae Won SUNG ,  Byeong Moon JEON ,  Joon Young PARK

    IPC: H04N19/645 ,  H04N19/625

    CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/122 ,  H04N19/129 ,  H04N19/149 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625

    Abstract: The present invention relates to a method for decoding a video signal, comprising the steps of: acquiring a transform size flag of the current macroblock from a video signal; checking the number of non-zero transform coefficients at each pixel position in a first transform block which corresponds to the transform size flag; changing a scan order of the first transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients in the first transform block; determining the number of the non-zero transform coefficients at each pixel position in a second transform block, and setting the changed scan order of the first transform block as an initialized scan order of the second transform block; adding the number of the non-zero transform coefficients at each pixel position in the first transform block and the number of the non-zero transform coefficients at each pixel position in the second transform block, and changing the scan order of the second transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients; and decoding the transform coefficients arranged in the scan order changed in the previous step, wherein the first transform block and the second transform block have sizes corresponding to the transform size flag, and are contained in the current macroblock.

    Abstract translation: 本发明涉及一种视频信号解码方法，包括以下步骤：从视频信号中获取当前宏块的变换大小标志; 检查对应于变换大小标志的第一变换块中的每个像素位置处的非零变换系数的数量; 通过对第一变换块中具有最大数目的非零变换系数的像素的位置进行优先排列来改变第一变换块的扫描顺序; 确定第二变换块中每个像素位置处的非零变换系数的数目，并将第一变换块的改变的扫描顺序设置为第二变换块的初始化扫描顺序; 将第一变换块中的每个像素位置处的非零变换系数的数量和第二变换块中的每个像素位置处的非零变换系数的数量相加，并且将第二变换块的扫描顺序改变为 优先考虑具有最大数目的非零变换系数的像素的位置; 以及对在前一步骤中改变的扫描顺序排列的变换系数进行解码，其中第一变换块和第二变换块具有与变换大小标志对应的大小，并且被包含在当前宏块中。

    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL
    6.
    发明申请
    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL 有权

    公开(公告)号：US20250016375A1

    公开(公告)日：2025-01-09

    申请号：US18896804

    申请日：2024-09-25

    Applicant: LG ELECTRONICS INC.

    Inventor： Jung Sun KIM ,  Seung Wook PARK ,  Young Hee CHOI ,  Jaewon SUNG ,  Byeong Moon JEON ,  Joon Young PARK

    IPC: H04N19/61 ,  H04N19/119 ,  H04N19/122 ,  H04N19/129 ,  H04N19/149 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625

    Abstract: The present invention relates to a method for decoding a video signal, comprising the steps of: acquiring a transform size flag of the current macroblock from a video signal; checking the number of non-zero transform coefficients at each pixel position in a first transform block which corresponds to the transform size flag; changing a scan order of the first transform block by prioritizing the position of the pixel having the greatest number of the nonzero transform coefficients in the first transform block; determining the number of the non-zero transform coefficients at each pixel position in a second transform block, and setting the changed scan order of the first transform block as an initialized scan order of the second transform block; adding the number of the non-zero transform coefficients at each pixel position in the first transform block and the number of the non-zero transform coefficients at each pixel position in the second transform block, and changing the scan order of the second transform block by prioritizing the position of the pixel having the greatest number of the nonzero transform coefficients; and decoding the transform coefficients arranged in the scan order changed in the previous step, wherein the first transform block and the second transform block have sizes corresponding to the transform size flag, and are contained in the current macroblock.

    METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL
    9.
    发明申请
    METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL 有权

    公开(公告)号：US20220060736A1

    公开(公告)日：2022-02-24

    申请号：US17516382

    申请日：2021-11-01

    Applicant: LG Electronics Inc.

    Inventor： Seung Wook PARK ,  Jung Sun KIM ,  Young Hee CHOI ,  Byeong Moon JEON ,  Joon Young PARK

    IPC: H04N19/513 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/61 ,  H04N19/132 ,  H04N19/44 ,  H04N19/573

    Abstract: A method of processing a video signal is disclosed. The present invention includes obtaining a current macroblock type, obtaining skip or direct mode indication information on a partition of the current macroblock according to the current macroblock type, deriving a motion vector of the partition according to the skip or direct mode indication information, and predicting a pixel value of the partition using the motion vector. Accordingly, the present invention obtains a pixel value of a reference block close to an original video using a motion vector, thereby enhancing a reconstruction ratio of the macroblock. As a macroblock uses skip or direct prediction indication information, it is unnecessary to separately code skip mode indication information and direct mode indication information on the macroblock, whereby an information size to be coded can be reduced.

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