公开(公告)号：US20220116587A1

公开(公告)日：2022-04-14

申请号：US17311044

申请日：2019-12-06

Applicant: LG Electronics Inc.

Inventor： Jane ZHAO ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/513

Abstract: The present invention provides a method of processing a video signal based on inter prediction, the method comprises constructing a merge list based on a neighboring block of a current block; adding a history-based merge candidate representing motion information of a previously coded block of the current block to the merge list; obtaining a merge index indicating a merge candidate used for inter prediction of the current block within the merge list; generating a prediction block of the current block based on motion information of the merge candidate indicated by the merge index; and adding a residual block of the current block to the prediction block to reconstruct the current block, wherein when the history-based merge candidate has motion information that is not redundant with a pre-defined merge candidate among merge candidates included in the merge list, the history-based merge candidate is added to the merge list.

公开(公告)号：US20240179337A1

公开(公告)日：2024-05-30

申请号：US18403248

申请日：2024-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Jane ZHAO ,  Seunghwan KIM

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/423

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/423 ,  H04N19/52

Abstract: The disclosure discloses a method for processing a video signal and an apparatus therefor. Specifically, the method of processing a video signal based on an inter prediction, comprising: configuring a merge list based on a neighboring block of a current block; adding a history based merge candidate included in a history based merge candidate list to the merge list when a number of a merge candidate included in the merge list is smaller than a first predetermined number; obtaining a merge index indicating a merge candidate used for an inter prediction of the current block within the merge list; and generating a prediction block of the current block based on motion information of a merge candidate indicated by the merge index, wherein a step of adding the history based merge candidate to the merge list comprises checking whether a second predetermined number of the history based merge candidate within the history based merge candidate list has the same motion information as the merge candidate included in the merge list.

公开(公告)号：US20240163453A1

公开(公告)日：2024-05-16

申请号：US18403388

申请日：2024-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Jane ZHAO ,  Seethal PALURI ,  Seunghwan KIM

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

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/137 ,  H04N19/176

Abstract: The disclosure discloses a method for processing a video signal and an apparatus therefor. Specifically, a method of processing a video signal based on inter prediction includes constructing a first merge candidate list of a current block using a spatial merge candidate and temporal merge candidate of the current block, constructing a second merge candidate list by adding a history-based merge candidate indicating motion information of a block coded prior to the current block to the first merge candidate list, obtaining a merge index indicating a merge candidate applied to the current block within the second merge candidate list, and generating a prediction block of the current block using motion information of a merge candidate indicated by the merge index. The history-based merge candidate may be added to the first merge candidate list if the history-based merge candidate has motion information not overlapping motion information of a pre-defined merge candidate among merge candidates included in the first merge candidate list.

公开(公告)号：US20210400298A1

公开(公告)日：2021-12-23

申请号：US17281149

申请日：2019-09-30

Applicant: LG ELECTRONICS INC.

Inventor： Jane ZHAO ,  Seethal PALURI ,  Seunghwan KIM

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

Abstract: The present disclosure discloses a method for processing a video signal and an apparatus therefor. Specifically, a method for processing a video signal by using an affine prediction may include: configuring a merge candidate list of a current block based on motion information of a neighboring block when the affine prediction is applied to the current block; acquiring a merge index indicating a merge candidate applied to the current block in the merge candidate list; deriving motion vectors for a plurality of control points of the current block by using motion information of the merge candidate indicated by the merge index; deriving a motion vector of each of a plurality of subblocks included in the current block by using the motion vectors of the control points; and generating a prediction block of the current block by using the motion vector of each of the subblocks.