公开(公告)号：US20240267509A1

公开(公告)日：2024-08-08

申请号：US18570443

申请日：2022-09-23

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196

CPC分类号： H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196

摘要： A video decoding method includes generating a prediction information merge list for a current block, selecting one of prediction information merge candidates included in the prediction information merge list on the basis of index information, and obtaining a prediction block for the current block on the basis of prediction information on the selected prediction information merge candidate.

公开(公告)号：US20240236340A9

公开(公告)日：2024-07-11

申请号：US18278717

申请日：2022-02-25

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/196 ,  H04N19/12 ,  H04N19/176 ,  H04N19/463 ,  H04N19/60 ,  H04N19/70

CPC分类号： H04N19/196 ,  H04N19/12 ,  H04N19/176 ,  H04N19/463 ,  H04N19/60 ,  H04N19/70

摘要： A method of decoding an image according to the present disclosure includes determining whether an inverse transform is skipped to a current block, parsing information on a residual coefficient of the current block, reconstructing the residual coefficient by inversely binarizing the information and selectively applying the inverse transform to the residual coefficient. In this case, the inverse binarization may be performed based on a rice parameter for the residual coefficient and the rice parameter may be derived based on a first variable derived based on a sum of absolute values of reference residual coefficients.

公开(公告)号：US20220295046A1

公开(公告)日：2022-09-15

申请号：US17637003

申请日：2020-08-28

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/105 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

摘要： A method for decoding a video according to the present disclosure may comprise: a step for configuring a current palette table on the basis of a previous palette table; a step for determining a palette index in units of pixels in the current block; and a step for restoring the pixels in the current block on the basis of the palette table and the palette index.

公开(公告)号：US20240129528A1

公开(公告)日：2024-04-18

申请号：US18569430

申请日：2022-06-27

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176

CPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176

摘要： A video encoding/decoding method and apparatus according to the present disclosure may: determine a current block via tree structure-based block partition; determine an intra prediction mode of the current block on the basis of an MPM list of the current block; derive a reference pixel for intra prediction of the current block; and carry out intra prediction of the current block on the basis of the intra prediction mode and the reference pixel.

公开(公告)号：US20220295045A1

公开(公告)日：2022-09-15

申请号：US17636987

申请日：2020-08-28

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/105 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

摘要： A video encoding/decoding method and device according to the present invention may comprise: configuring a palette table for a palette mode of a current block; determining per-pixel palette indices of the current block; and predicting pixels of the current block on the basis of the palette table and the palette indices.

公开(公告)号：US20210392339A1

公开(公告)日：2021-12-16

申请号：US17343006

申请日：2021-06-09

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/159 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176

摘要： An image decoding method according to the present disclosure includes determining a reference pixel line of a current block, determining an intra prediction mode of the current block and deriving a prediction sample of the current block based on the intra prediction mode and a reference pixel included in the reference pixel line. In this case, the prediction sample is determined based on a prediction angle of the intra prediction mode and an inverse-angle variable derived based on the prediction angle. And when the prediction angle has a predefined value, the inverse-angle variable is set as a default value.

公开(公告)号：US20210392337A1

公开(公告)日：2021-12-16

申请号：US17342933

申请日：2021-06-09

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/137 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176 ,  H04N19/174

摘要： An image decoding method and apparatus according to the present disclosure may determine an inter prediction mode of a current block, derive motion information of a current block according to the inter prediction mode, obtain a first prediction block of the current block based on the motion information, and obtain a second prediction block of the current block by applying at least one of a weight, an offset, or a first variable for explicit weighted prediction to the first prediction block.

公开(公告)号：US20240275989A1

公开(公告)日：2024-08-15

申请号：US18569476

申请日：2022-06-27

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/176 ,  H04N19/132 ,  H04N19/159 ,  H04N19/96

CPC分类号： H04N19/176 ,  H04N19/132 ,  H04N19/159 ,  H04N19/96

摘要： A video encoding/decoding method and device disclosed herein determine the current block through block division based on a tree structure and sub-sample the current block to form one or more sub-blocks from the current block, and can encode/decode the sub-blocks belonging to the current block according to a prescribed scan order.

公开(公告)号：US20220408087A1

公开(公告)日：2022-12-22

申请号：US17760554

申请日：2020-09-23

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/122 ,  H04N19/60 ,  H04N19/176 ,  H04N19/70 ,  H04N19/136 ,  H04N19/124 ,  H04N19/18

摘要： A video decoding method according to the present disclosure may comprise the steps of: determining whether an inverse transform is skipped in a current block; decoding a residual coefficient of the current block; and selectively applying the inverse transform to the residual coefficient on the basis of the determination. When decoding the residual coefficient, either a first syntax indicating whether the residual coefficient is greater than 0 or a second syntax indicating the absolute value of the residual coefficient may be selectively decoded.

公开(公告)号：US20210392370A1

公开(公告)日：2021-12-16

申请号：US17343063

申请日：2021-06-09

申请人： KT CORPORATION

发明人： Sung Won LIM

IPC分类号： H04N19/563 ,  H04N19/577

摘要： A video decoding method according to the present disclosure may include determining whether an affine motion model is applied to a current block or not, performing motion compensation for the current block according to whether the affine motion model is applied or not, determining a value of a first variable and a second variable representing whether a prediction block obtained by the motion compensation will be refined and determining a padding size of the prediction block.