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    Method and apparatus for decoding a video signal
    115.
    发明授权
    Method and apparatus for decoding a video signal 有权

    公开(公告)号：US10015519B2

    公开(公告)日：2018-07-03

    申请号：US15460013

    申请日：2017-03-15

    Applicant: LG Electronics Inc.

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

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

    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 an apparatus for decoding a video signal
    119.
    发明授权
    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：US09219914B2

    公开(公告)日：2015-12-22

    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: H04N7/12 ,  H04N19/51 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/132 ,  H04N19/44 ,  H04N19/573

    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 AND APPARATUS FOR PROCESSING A VIDEO SIGNAL
    120.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING A VIDEO SIGNAL 审中-公开
    用于处理视频信号的方法和装置

    公开(公告)号：US20150334419A1

    公开(公告)日：2015-11-19

    申请号：US14807968

    申请日：2015-07-24

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/61 ,  H04N19/86 ,  H04N19/51 ,  H04N19/18 ,  H04N19/176

    CPC classification number: H04N19/51 ,  H04N19/107 ,  H04N19/11 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/61 ,  H04N19/86

    Abstract: The present invention relates to a video signal decoding method for adding an intra prediction mode as a sub-macroblock type to prediction of a macroblock in coding a video signal. Some implementations may include obtaining a macroblock type, when a macroblock includes the intra prediction coded sub-macroblock and the inter prediction coded sub-macroblock based on the macroblock type, obtaining prediction mode flag information indicating whether the sub-macroblock is the intra prediction coded or the inter prediction coded, and obtaining a prediction value of the sub-macroblock. Accordingly, implementations disclosed herein may raise coding efficiency of video signal by adding an intra prediction mode as a sub-macroblock type in predicting a macroblock.

    Abstract translation: 本发明涉及用于将帧内预测模式作为子宏块类型添加到对编码视频信号的宏块进行预测的视频信号解码方法。 一些实现可以包括：当宏块包括基于宏块类型的帧内预测编码子宏块和帧间预测编码子宏块时获得宏块类型，获得指示子宏块是帧内预测编码的预测模式标志信息 或帧间预测编码，并获得子宏块的预测值。 因此，本文公开的实现方式可以通过在预测宏块中添加帧内预测模式作为子宏块类型来提高视频信号的编码效率。

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