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    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL
    27.
    发明申请
    METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL 有权

    公开(公告)号：US20210211726A1

    公开(公告)日：2021-07-08

    申请号：US17208100

    申请日：2021-03-22

    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 ,  H04N19/625 ,  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.

    METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL
    29.
    发明申请
    METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL 审中-公开

    公开(公告)号：US20200221113A1

    公开(公告)日：2020-07-09

    申请号：US16820937

    申请日：2020-03-17

    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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