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    Method and apparatus for decoding a video signal
    106.
    发明授权
    Method and apparatus for decoding a video signal 有权

    公开(公告)号：US09635368B2

    公开(公告)日：2017-04-25

    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 ,  H04N19/149 ,  H04N19/129 ,  H04N19/18 ,  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.

    Method to derive at least one motion vector of a bi-predictive block in a current picture
    110.
    发明授权
    Method to derive at least one motion vector of a bi-predictive block in a current picture 有权
    导出当前图像中的双预测块的至少一个运动矢量的方法

    公开(公告)号：US09066106B2

    公开(公告)日：2015-06-23

    申请号：US14103450

    申请日：2013-12-11

    Applicant: LG Electronics Inc.

    Inventor： Byeong Moon Jeon

    IPC: H04N7/12 ,  G06K9/36 ,  H04N19/513 ,  H04N19/105 ,  H04N19/52 ,  H04N19/50 ,  H04N19/503 ,  H04N19/176 ,  H04N19/51 ,  H04N19/61 ,  H04N19/157 ,  H04N19/573 ,  H04N19/577 ,  H04N19/56

    CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/521 ,  H04N19/56 ,  H04N19/573 ,  H04N19/61

    Abstract: In one embodiment, a method for a moving picture coding system to derive at least one motion vector of a bi-predictive block in a current picture from a motion vector of a first block in a first picture includes selecting, by the moving picture coding system, a list 1 motion vector of the first block in the first picture as a motion vector for deriving list 0 and list 1 motion vectors of the bi-predictive block if the first block only has the list 1 motion vector, the first picture being permitted to be located temporally before the current picture and permitted to be located temporally after the current picture, scaling the selected motion vector and deriving the list 0 and list 1 motion vectors of the bi-predictive block by applying a bit operation to the scaled motion vector.

    Abstract translation: 在一个实施例中，一种运动图像编码系统从第一图像中的第一块的运动矢量导出当前图像中的双向预测块的至少一个运动矢量的方法包括：通过运动图像编码系统 ，第一图像中的第一块的列表1运动矢量作为用于导出列表0的运动矢量和列表1双预测块的运动矢量，如果第一块仅具有列表1运动矢量，则允许第一图像 位于时间上位于当前图像之前并被允许位于当前图像之后的时间上，通过对比例运动矢量应用比特运算来缩放所选运动矢量并导出列表0和列表1双预测块的运动矢量 。

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