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    METHOD AND AN APPARATUS FOR DECODING A VIDEO SIGNAL
    81.
    发明申请
    METHOD AND AN 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：US20140192889A1

    公开(公告)日：2014-07-10

    申请号：US14205591

    申请日：2014-03-12

    Applicant: LG Electronics Inc.

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

    IPC: H04N19/51

    CPC classification number: H04N19/513 ,  H04N19/132 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/70

    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.

    Abstract translation: 公开了一种处理视频信号的方法。 本发明包括获取当前宏块类型，根据当前宏块类型获得关于当前宏块的分区的跳过或直接模式指示信息，根据跳过或直接模式指示信息导出分区的运动矢量，并且预测 使用运动矢量的分区的像素值。 因此，本发明使用运动矢量来获得接近原始视频的参考块的像素值，从而提高宏块的重构率。 由于宏块使用跳过或直接预测指示信息，因此不需要对宏块分别编码跳过模式指示信息和直接模式指示信息，从而可以减少要编码的信息大小。

    Method of predicting a motion vector for a current block in a current picture
    82.
    发明授权
    Method of predicting a motion vector for a current block in a current picture 有权
    预测当前图像中当前块的运动矢量的方法

    公开(公告)号：US08712172B2

    公开(公告)日：2014-04-29

    申请号：US13835232

    申请日：2013-03-15

    Applicant: LG Electronics Inc.

    Inventor： Byeong Moon Jeon ,  Yoon Seong Soh

    IPC: G06K9/36 ,  G06K9/46 ,  H04N7/50 ,  H04N7/26 ,  H04N7/36

    CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/50 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/56 ,  H04N19/563 ,  H04N19/573 ,  H04N19/577 ,  H04N19/61

    Abstract: In one embodiment, a method of predicting a motion vector for a current block in a current picture by a moving picture decoding device includes obtaining, by the moving picture decoding device, a direction of a reference picture of the current picture, based on comparison of a display order of the reference picture and a display order of the current picture, obtaining, by the moving picture decoding device, at least three motion vectors for at least three other blocks than the current block based on the direction of the reference picture, predicting, by the moving picture decoding device, a motion vector for the current block by using a median operation of the at least three motion vectors and decoding the current block in the current picture using the predicted motion vector for the current block.

    Abstract translation: 在一个实施例中，通过运动图像解码装置预测当前图像中的当前块的运动矢量的方法包括：通过运动图像解码装置获得当前图像的参考图像的方向，基于 参考图像的显示顺序和当前图像的显示顺序，由运动图像解码装置根据参考图像的方向获得与当前块相比的至少三个其他块的至少三个运动矢量，预测 通过运动图像解码装置使用所述至少三个运动矢量的中值运算并且使用当前块的预测运动矢量对当前图像中的当前块进行解码来获取当前块的运动矢量。

    Method and apparatus for decoding a video signal
    90.
    发明授权
    Method and apparatus for decoding a video signal 有权

    公开(公告)号：US10986372B2

    公开(公告)日：2021-04-20

    申请号：US16519897

    申请日：2019-07-23

    Applicant: LG ELECTRONICS INC.

    Inventor： Jung Sun Kim ,  Seung Wook Park ,  Young Hee Choi ,  Jaewon Sung ,  Byeong Moon Jeon ,  Joon Young Park

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

    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.

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