公开(公告)号：US11805246B2

公开(公告)日：2023-10-31

申请号：US18073136

申请日：2022-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/105 ,  H04N19/503 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/503 ,  H04N19/70

Abstract: Embodiments of the disclosure provide methods and devices for decoding video signals using inter prediction. According to an embodiment of the disclosure, a method for processing a video signal comprises constructing a reference picture list of a current picture in the video signal and performing a prediction for a current picture by using the reference picture list, wherein constructing the reference picture list comprising, if a first entry of the reference picture list corresponds to a short-term reference picture (STRP), obtaining a picture order count (POC) difference between a picture related to the first entry and another picture, and if a second entry of the reference picture list corresponds to a long-term reference picture (LTRP), obtaining a POC modulo value of a picture related to the second entry. A reference picture list for identifying a picture may be generated in a simplified and effective manner. Thus, the compression performance may be increased, and the computation time may be decreased.

公开(公告)号：US11785245B2

公开(公告)日：2023-10-10

申请号：US17952727

申请日：2022-09-26

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seung Hwan Kim

IPC: H04N19/55 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus comprises obtaining inter prediction information of a current block and wraparound information from a bitstream, and generating a prediction block of the current block based on the inter prediction information and the wraparound information. The wraparound information may comprise a first flag specifying whether wraparound motion compensation is enabled for a current picture including the current block. Based on the first flag having a predetermined value specifying that the wraparound motion compensation is enabled for the current picture, the prediction block may be generated by performing the wraparound motion compensation, and the wraparound motion compensation may be performed based on either boundaries of a current subpicture including the current block or boundaries of a reference picture of the current block, based on whether the current subpicture is independently coded or not.

公开(公告)号：US11743465B2

公开(公告)日：2023-08-29

申请号：US17752396

申请日：2022-05-24

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/124 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70

Abstract: An image decoding method performed by a decoding apparatus according to the present document comprises the steps of: obtaining a flag indicating whether quantization parameter data for combined chroma coding is present on the basis of a type of chroma; obtaining the quantization parameter data for the combined chroma coding on the basis of the flag; deriving a chroma quantization parameter table on the basis of the quantization parameter data; deriving a quantization parameter for the combined chroma coding on the basis of the chroma quantization parameter table; deriving residual samples on the basis of the quantization parameter; and generating a reconstructed picture on the basis of the residual samples.

公开(公告)号：US11677939B2

公开(公告)日：2023-06-13

申请号：US17570247

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/91

Abstract: According to the disclosure of the present disclosure, the index of an alternative filter is derived from ALF information, and an ALF procedure for a chroma component of a current block can be performed on the basis of the alternative filter.

公开(公告)号：US11647181B2

公开(公告)日：2023-05-09

申请号：US17842676

申请日：2022-06-16

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/176 ,  H04N19/105 ,  H04N19/137 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method executed by a video decoding apparatus according to the present document comprises the steps of: parsing a flag associated with weighted prediction from a bitstream; on the basis of the flag, parsing a prediction weighted table syntax from the bitstream; and on the basis of the prediction weighted table syntax, executing a weighted prediction on a current block in a current picture to reconstruct the current picture, wherein on the basis of the value of the flag being 1, the prediction weighted table syntax may be parsed from a picture header of the bitstream, and on the basis of the value of the flag being 0, the prediction weighted table syntax may be parsed from a slice header of the bitstream.

公开(公告)号：US11601645B2

公开(公告)日：2023-03-07

申请号：US17570237

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

Abstract: An image decoding method, according to the present disclosure may comprise: acquiring, from a bitstream, image information including adaptive loop filter (ALF) information including, alternative filter information for a chroma component of a current block, and residual information; generating reconstructed samples for the current block on the basis of the residual information; and generating modified reconstructed samples for the chroma component of the current block on the basis of the alternative filter information.

公开(公告)号：US20220417561A1

公开(公告)日：2022-12-29

申请号：US17780294

申请日：2020-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/172 ,  H04N19/107 ,  H04N19/593 ,  H04N19/503 ,  H04N19/136 ,  H04N19/119

Abstract: A video decoding method performed by a video decoding apparatus according to the present document comprises: parsing number information about the number of slices for which height is explicitly signaled in a tile of a current picture from a bitstream; parsing height information about the height of the slices for which height is explicitly signaled from the bitstream based on the number information; and decoding the current picture based on the number information and the height information.

公开(公告)号：US11503343B2

公开(公告)日：2022-11-15

申请号：US17570854

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/70 ,  H04N19/18 ,  H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  H04N19/132 ,  H04N19/174 ,  H04N19/172

Abstract: According to the disclosure of the present document, scaling list data delivered in an adaptation parameter set (APS) may be signaled through a hierarchical structure, and the amount of data that needs to be signaled for video/image coding may be reduced and implementation may be facilitated by placing limits on the scaling list data delivered in the APS.

公开(公告)号：US11483567B2

公开(公告)日：2022-10-25

申请号：US17278478

申请日：2019-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Mehdi Salehifar ,  Seunghwan Kim

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A method for processing video signals on the basis of inter prediction includes the steps of: deriving a motion vector predictor by using motion information of a neighboring block of the current block; parsing layer information for indicating the current layer, to which a motion vector difference used for the inter prediction of the current block belongs, within a predefined layer structure in which a combination of motion vector differences between one or more horizontal and vertical components is classified into a plurality of layers; parsing index information for indicating a specific combination in the current layer; deriving a motion vector difference of the current block by using the layer information and the index information; and deriving a motion vector of the current block by adding the motion vector difference to the motion vector predictor.

公开(公告)号：US20220329873A1

公开(公告)日：2022-10-13

申请号：US17838062

申请日：2022-06-10

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

IPC: H04N19/82 ,  H04N19/156 ,  H04N19/18

Abstract: According to embodiments of the present document, the subjective/objective quality of an image can be improved through image coding on the basis of subpictures and/or virtual boundaries, and consumption of hardware resources required for coding can be reduced.