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    Method and apparatus for processing a video signal
    433.
    发明授权
    Method and apparatus for processing a video signal 有权
    用于处理视频信号的方法和装置

    公开(公告)号：US09357218B2

    公开(公告)日：2016-05-31

    申请号：US14624739

    申请日：2015-02-18

    Applicant: LG ELECTRONICS INC.

    Inventor： Seungwook Park ,  Joonyoung Park ,  Jungsun Kim ,  Younghee Choi ,  Yongjoon Jeon ,  Jaewon Sung ,  Byeongmoon Jeon ,  Jaehyun Lim

    IPC: H04N7/12 ,  H04N19/167 ,  H04N19/513 ,  H04N19/56 ,  H04N19/159 ,  H04N19/139 ,  H04N19/583 ,  H04N19/61 ,  H04N19/96 ,  H04N19/105

    CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/51 ,  H04N19/521 ,  H04N19/56 ,  H04N19/61 ,  H04N19/96

    Abstract: The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.

    Abstract translation: 本发明公开了一种用于对视频信号进行编码或解码的方法和装置。 根据本发明的用于处理视频信号的方法使用其中使用相邻单元的预测信息而不是在本单元上发送预测信息的合并模式，以便提高编码效率。 在这种情况下，确定用于在预定位置的单元之间合并的可用候选单元的数量，并且基于用于合并的可用候选单元的数量来获取用于合并模式的信息。 使用合并模式的信息确定要合并的单位，并且获取关于要合并的单元的预测信息。 使用关于要合并的单位的预测信息来获取本单元的预测值，并且使用所获取的预测值来恢复本单元。

    Image information encoding and decoding method
    434.
    发明授权
    Image information encoding and decoding method 有权
    图像信息编码和解码方法

    公开(公告)号：US09253489B2

    公开(公告)日：2016-02-02

    申请号：US14658895

    申请日：2015-03-16

    Applicant: LG Electronics Inc.

    Inventor： Seungwook Park ,  Jaehyun Lim ,  Jungsun Kim ,  Joonyoung Park ,  Younghee Choi ,  Byeongmoon Jeon ,  Yongjoon Jeon

    IPC: H04N19/117 ,  H04N19/13 ,  H04N19/70 ,  H04N19/14 ,  H04N19/186 ,  H04N19/82 ,  H04N19/139 ,  H04N19/176

    CPC classification number: H04N19/117 ,  H04N19/13 ,  H04N19/139 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82 ,  H04N19/91

    Abstract: The present invention relates to an image information encoding and decoding method and a device for same. One embodiment of an image information encoding method according to the present invention, as an image information encoding method according to another embodiment of the present invention, includes the steps of: generating a restore block; applying a deblocking filter on the restore block; applying a Sample Adaptive Offset (SAO) on the restore block having the deblocking filter applied thereon; and transmitting information on the SAO application. During the applying of the SAO, the SAO is applied to chroma pixels, and during the transmitting of the information, in addition to information on whether the SAO is applied on the chroma pixels, at least one of area information, division information on the SAO coverage area, SAO type information, and SAO offset information is transmitted.

    Abstract translation: 本发明涉及一种图像信息编码和解码方法及其装置。 根据本发明的图像信息编码方法的一个实施例，作为根据本发明的另一实施例的图像信息编码方法，包括以下步骤：产生恢复块; 在恢复块上应用去块滤波器; 在其上施加了去块滤波器的恢复块上应用采样自适应偏移（SAO）; 并传送关于SAO申请的信息。 在应用SAO时，将SAO应用于色度像素，并且在信息发送期间，除了关于SAO是否应用于色度像素的信息之外，还包括区域信息，SAO的分割信息中的至少一个 覆盖区域，SAO类型信息和SAO偏移信息。

    METHOD FOR ENCODING AND DECODING IMAGE INFORMATION
    435.
    发明申请
    METHOD FOR ENCODING AND DECODING IMAGE INFORMATION 有权
    编码和解码图像信息的方法

    公开(公告)号：US20150229972A1

    公开(公告)日：2015-08-13

    申请号：US14694499

    申请日：2015-04-23

    Applicant: LG Electronics Inc.

    Inventor： Seungwook PARK ,  Jungsun Kim ,  Yongjoon Jeon ,  Joonyoung Park ,  Byeongmoon Jeon ,  Jaehyun Lim

    IPC: H04N19/80 ,  H04N19/44 ,  H04N19/50

    CPC classification number: H04N19/80 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/132 ,  H04N19/186 ,  H04N19/44 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/98

    Abstract: The present invention relates to a method for encoding and decoding image information and to an apparatus using same, and the method for encoding the image information, according to the present invention, comprises the steps of: generating a recovery block; applying a deblocking filter to the recovery block; applying a sample adaptive offset (SAO) to the recovery block to which the deblocking filter is applied; and transmitting the image information including information on the SAO which is applied, wherein in the step of transmitting, information for specifying bands that cover a scope of a pixel value, to which a band off set is applied, is transmitted when the band offset is applied during the step of applying the SAO.

    Abstract translation: 本发明涉及一种编码和解码图像信息的方法及其使用方法，并且根据本发明的图像信息编码方法包括以下步骤：产生恢复块; 对恢复块应用去块滤波器; 将样本自适应偏移（SAO）应用于应用了去块滤波器的恢复块; 并且发送包括所应用的SAO的信息的图像信息，其中在发送步骤中当频带偏移为带宽偏移时，发送用于指定应用了带宽关闭设置的覆盖所述像素值的范围的频带的信息 在应用SAO的步骤中应用。

    Method for coding image on basis of selective transform and device therefor
    438.
    发明授权
    Method for coding image on basis of selective transform and device therefor 有权

    公开(公告)号：US12284356B2

    公开(公告)日：2025-04-22

    申请号：US18676359

    申请日：2024-05-28

    Applicant: LG ELECTRONICS INC.

    Inventor： Mehdi Salehifar ,  Seunghwan Kim ,  Moonmo Koo ,  Jaehyun Lim ,  Seethal Paluri

    IPC: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/18

    Abstract: A method for decoding an image by a decoding device according to the present invention comprises the steps of: deriving, from a bit stream, transform coefficients of a block to be decoded; deriving residual samples of the block to be decoded, on the basis of a selective transform of the transform coefficients; and generating a reconstructed picture on the basis of the residual samples of the block to be decoded and prediction samples of the block to be decoded, wherein the selective transform is performed on the basis of a modified transform matrix, the modified transform matrix comprises a matrix including a modified basis vector, and the modified basis vector contains a certain number of elements selected from N elements.

    Image coding method based on transform, and device therefor
    440.
    发明授权
    Image coding method based on transform, and device therefor 有权

    公开(公告)号：US12273529B2

    公开(公告)日：2025-04-08

    申请号：US18369015

    申请日：2023-09-15

    Applicant: LG Electronics Inc.

    Inventor： Moonmo Koo ,  Jaehyun Lim ,  Seunghwan Kim

    IPC: H04N11/02 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

    Abstract: An image decoding method includes a step of deriving a modified transform coefficient, wherein the step of deriving the modified transform coefficient includes the steps of: deriving a first variable indicating whether the transform coefficient exists in an area excluding a DC location of the current block; parsing an LFNST index based on the derivation result; and deriving the modified transform coefficient based on the LFNST index and an LFNST matrix, and based on the fact that the current block is divided into a plurality of sub-partition blocks, the LFNST index can be parsed without deriving the first variable.

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