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公开(公告)号：US12166970B2
公开(公告)日：2024-12-10
申请号：US18206411
申请日：2023-06-06
Applicant: LG ELECTRONICS INC.
Inventor： Hyeongmoon Jang , Naeri Park , Seunghwan Kim
IPC: H04N19/105 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/50 , H04N19/70
Abstract: A decoding method performed by a decoding device, according to the present document, may comprise the steps of: acquiring a sequence parameter set from a bitstream; acquiring a combined inter-picture merge and intra-picture prediction (CIIP) enable flag from the sequence parameter set; determining, on the basis of the CIIP enable flag and the size of a current block, whether a regular merge flag is included in the bitstream; parsing the regular merge flag in the bitstream on the basis that a condition based on the CIIP enable flag and a condition based on the size of the current block are satisfied; generating prediction samples of the current block on the basis of the regular merge flag; and generating a restoration picture on the basis of the prediction samples.
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公开(公告)号：US12149728B2
公开(公告)日：2024-11-19
申请号：US18224852
申请日：2023-07-21
Applicant: LG Electronics Inc.
Inventor： Naeri Park , Jaehyun Lim , Junghak Nam
IPC: H04N19/513 , H04N19/103 , H04N19/119 , H04N19/176 , H04N19/44 , H04N19/537 , H04N21/235
Abstract: A video decoding method performed by a decoding apparatus comprises deriving control points (CPs) for the current block; obtaining motion vectors for the CPs; deriving a motion vector of a sub-block or a sample unit in the current block on the basis of the obtained motion vectors; deriving a prediction sample for the current block on the basis of the derived motion vector; and generating a reconstruction sample on the basis of the prediction sample. The method enables effective performance of inter prediction through the motion vectors (transformation prediction), not only when an image in the current block is moved in a plane, but also when the image in the current block is rotated, zoomed in, zoomed out, or transformed into a parallelogram. Accordingly, the amount of data for the residual signal for the current block can be eliminated or reduced, and the overall coding efficiency can be improved.
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公开(公告)号：US12137213B2
公开(公告)日：2024-11-05
申请号：US18231129
申请日：2023-08-07
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/00 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/176
Abstract: An image decoding method according to the present document may comprise: a step for deriving an inter prediction mode from encoded information; a step for constructing reference pictures lists; a step for deriving motion information including reference picture indices for symmetric motion vector differences (SMVD) on the basis of reference pictures included in the reference picture lists; and a step for generating prediction samples on the basis of the motion information. The reference picture indices for SMVD may be derived on the basis of short-term reference pictures included in the reference picture lists.
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公开(公告)号：US12120332B2
公开(公告)日：2024-10-15
申请号：US18234274
申请日：2023-08-15
Applicant: LG ELECTRONICS INC.
Inventor： Hendry Hendry , Joonyoung Park , Yongjoon Jeon , Byeongmoon Jeon , Jungsun Kim , Jaehyun Lim , Chulkeun Kim , Naeri Park , Seungwook Park
IPC: H04N19/436 , H04N19/119 , H04N19/174 , H04N19/70
CPC classification number: H04N19/436 , H04N19/119 , H04N19/174 , H04N19/70
Abstract: The present invention relates to a video encoding method, a video decoding method, and a device using the same, and the video encoding method according to the present invention comprises the steps of: specifying a tile and a slice by partitioning an inputted picture; performing encoding on the basis of the tile and the slice; and transmitting the encoded video information, wherein the picture is partitioned into one or more tiles and one or more slices, and the restrictions for parallel processing can be applied to the tiles and the slices.
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公开(公告)号：US12120295B2
公开(公告)日：2024-10-15
申请号：US18218925
申请日：2023-07-06
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/00 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/196
CPC classification number: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/196
Abstract: According to the disclosure of the present document, when the inter-prediction type of the current block indicates biprediction, weight index information for a candidate in a merge candidate list or sub-block merge candidate list can be derived, and coding efficiency can be raised.
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公开(公告)号：US12058339B2
公开(公告)日：2024-08-06
申请号：US17977306
申请日：2022-10-31
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/139 , H04N19/105 , H04N19/109 , H04N19/176 , H04N19/52
CPC classification number: H04N19/139 , H04N19/105 , H04N19/109 , H04N19/176 , H04N19/52
Abstract: According to embodiments of the present document, a prediction procedure may be performed for image/video coding, and the prediction procedure may include symmetric motion vector differences (SMVDs) and merge mode motion vector differences (MMVDs) according to an inter prediction. The inter prediction may be performed on the basis of reference pictures of a current picture, and types (e.g., a long term reference picture, a short term reference picture, etc.) of the reference pictures may be considered for the inter prediction. Therefore, performance and coding efficiency in the prediction procedure can be improved.
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公开(公告)号：US20240259566A1
公开(公告)日：2024-08-01
申请号：US18633256
申请日：2024-04-11
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/139 , H04N19/105 , H04N19/109 , H04N19/176 , H04N19/52
CPC classification number: H04N19/139 , H04N19/105 , H04N19/109 , H04N19/176 , H04N19/52
Abstract: According to embodiments of the present document, a prediction procedure may be performed for image/video coding, and the prediction procedure may include symmetric motion vector differences (SMVDs) and merge mode motion vector differences (MMVDs) according to an inter prediction. The inter prediction may be performed on the basis of reference pictures of a current picture, and types (e.g., a long term reference picture, a short term reference picture, etc.) of the reference pictures may be considered for the inter prediction. Therefore, performance and coding efficiency in the prediction procedure can be improved.
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公开(公告)号：US11991385B2
公开(公告)日：2024-05-21
申请号：US18132225
申请日：2023-04-07
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/52 , H04N19/105 , H04N19/109 , H04N19/132 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/573 , H04N19/70
CPC classification number: H04N19/52 , H04N19/105 , H04N19/109 , H04N19/132 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/573 , H04N19/70
Abstract: According to embodiments according to the present document, merge mode motion vector differences (MMVD) and symmetric motion vector differences (SMVD) may be performed on the basis of reference picture types and, in particular, short-term reference pictures may be used. Accordingly, prediction performance and coding efficiency in an inter prediction mode may be increased.
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公开(公告)号：US11949883B2
公开(公告)日：2024-04-02
申请号：US18093194
申请日：2023-01-04
Applicant: LG Electronics Inc.
Inventor： Yongjoon Jeon , Seungwook Park , Jaehyun Lim , Chulkeun Kim , Jungsun Kim , Naeri Park , Hendry Hendry , Byeongmoon Jeon , Joonyoung Park
IPC: H04N19/159 , H04N19/43 , H04N19/436 , H04N19/52 , H04N19/57 , H04N19/105 , H04N19/176
CPC classification number: H04N19/159 , H04N19/43 , H04N19/436 , H04N19/52 , H04N19/57 , H04N19/105 , H04N19/176
Abstract: According to the present invention, an inter prediction method comprises the steps of: generating a merge candidate list for a block to be predicted, wherein the block is to correspond to a current prediction unit; deriving, on the basis of one of a plurality of merge candidates constituting the merge candidate list, motion information on the block to be predicted; and performing, on the basis of the derived motion information, a prediction on the block to be predicted so as to generate a prediction block corresponding to the current prediction unit.
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10.发明公开
公开(公告)号：US20240080438A1
公开(公告)日：2024-03-07
申请号：US18389064
申请日：2023-11-13
Applicant: LG ELECTRONICS INC.
Inventor： Naeri Park , Junghak Nam , Hyeongmoon Jang
IPC: H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176
CPC classification number: H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176
Abstract: The present invention relates to a method for encoding and decoding images, wherein, if bi-prediction is applied, a weight for a merge candidate is derived, thereby improving the image compression efficiency, and making it possible to efficiently configure a motion vector candidate. A merge candidate list of the current block is produced on the basis of inter-prediction information, and the candidate includes a configured affine merge candidate. If the configured affine merge candidate is produced on the basis of a combination of control points including CP0, weight index information regarding the configured affine merge candidate is produced on the basis of weight index information regarding CP0. If the configured affine merge candidate is produced on the basis of a combination of control points excluding CP0, weight index information regarding the configured affine merge candidate is derived on the basis of weight index information regarding CP1.
