公开(公告)号：US20220132172A1

公开(公告)日：2022-04-28

申请号：US17570854

申请日：2022-01-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/124 ,  H04N19/30 ,  H04N19/176 ,  H04N19/18 ,  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：US20220116615A1

公开(公告)日：2022-04-14

申请号：US17556780

申请日：2021-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: According to the disclosure of the present document, it is possible for various LMCS application cases to apply an LMCS procedure to a block having a dual tree structure. In addition, the coding predormance of the block can be improved. According to the disclosure of the present document, resources required for the LMCS procedure can be reduced. Therefore, the complexity of the LMCS can be reduced and the video/image coding efficiency can be increased.

公开(公告)号：US20220109847A1

公开(公告)日：2022-04-07

申请号：US17423591

申请日：2020-06-17

Applicant: LG Electronics Inc.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/30 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: According to the disclosure of the present document, a procedure of deriving indexes for inverse luma mapping and/or chroma residual scaling can be simplified, and linear LMCS can be applied. Therefore, the complexity of LMCS can be reduced, and the efficiency of video/image coding can be increased.

公开(公告)号：US20250126240A1

公开(公告)日：2025-04-17

申请号：US18727021

申请日：2023-01-06

Applicant: LG Electronics Inc.

Inventor： Seunghwan KIM ,  Seethal PALURI ,  Jie ZHAO

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

Abstract: According to a present disclosure, an image decoding method performed by a decoding apparatus, the image decoding method comprising obtaining image information including inter prediction-related information of a current block from a bitstream; configuring at least one of a merge list of the current block and an advanced motion vector prediction (AMVP) list of the current block for inter prediction; deriving motion information of the current block on the basis of the at least one of the merge list of the current block and the AMVP list of the current block; generating prediction samples for the current block based on the motion information of the current block; and generating reconstruction samples for the current block based on the prediction samples for the current block, wherein the merge list includes at least one of a primary merge list and a secondary merge list (SML).

公开(公告)号：US20250039411A1

公开(公告)日：2025-01-30

申请号：US18778079

申请日：2024-07-19

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seung Hwan KIM ,  Mehdi SALEHIFAR

IPC: H04N19/186 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463

Abstract: Provided are an image encoding/decoding method and device. The image decoding method performed by the image decoding device, according to the present disclosure, may comprise the steps of: determining a residual sample of a current block; and resetting the value of the residual sample on the basis of whether a color space transform is applied. The step for resetting the value of the residual block may be performed on the basis of a half value of a chroma residual sample value.

公开(公告)号：US20240430425A1

公开(公告)日：2024-12-26

申请号：US18830857

申请日：2024-09-11

Applicant: LG Electronics Inc.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: According to the disclosure of this document, it is possible to derive a residual sample by applying an adaptive color transform (ACT) to a current block on the basis of ACT-related information, and at this time, the residual sample is clipped and derived on the basis of a clipping range, wherein the clipping range is determined on the basis of a bit depth.

公开(公告)号：US20240414374A1

公开(公告)日：2024-12-12

申请号：US18703597

申请日：2022-10-20

Applicant: LG Electronics Inc.

Inventor： Jungah CHOI ,  Seunghwan KIM ,  Moonmo KOO ,  Jie ZHAO ,  Jaehyun LIM ,  Jangwon CHOI

IPC: H04N19/60 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: According to the disclosure of the present document, by configuring a primary transform to include a non-separable transform, higher encoding efficiency may be expected compared to the existing primary transform including only a separable transform. Also, by efficiently signaling information related to a primary transform including a separable transform and a non-separable transform, the effect of reducing the number of bits and improving coding performance may be expected. In addition, by efficiently applying a primary transform and a secondary transform, computational complexity and power consumption may be reduced, and latency required for additionally generated transform coefficient processing may be minimized.

公开(公告)号：US20240414360A1

公开(公告)日：2024-12-12

申请号：US18811259

申请日：2024-08-21

Applicant: LG Electronics Inc.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/196 ,  H04N19/176 ,  H04N19/186

Abstract: According to the disclosure of the present document, a residual sample can be derived by applying adaptive color transform (ACT) with respect to a current block on the basis of ACT-associated information, wherein the residual sample is derived by being clipped on the basis of a clipping boundary, wherein the clipping boundary is determined on the basis of a bit depth.

公开(公告)号：US20240380891A1

公开(公告)日：2024-11-14

申请号：US18782105

申请日：2024-07-24

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: According to the disclosure of the present document, it is possible for various LMCS application cases to apply an LMCS procedure to a block having a dual tree structure. In addition, the coding predormance of the block can be improved. According to the disclosure of the present document, resources required for the LMCS procedure can be reduced. Therefore, the complexity of the LMCS can be reduced and the video/image coding efficiency can be increased.

公开(公告)号：US20240364882A1

公开(公告)日：2024-10-31

申请号：US18644040

申请日：2024-04-23

Applicant: LG ELECTRONICS INC.

Inventor： Jie ZHAO ,  Seung Hwan KIM ,  Hendry HENDRY ,  Seethal PALURI

IPC: H04N19/12 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

CPC classification number: H04N19/12 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

Abstract: An image encoding/decoding method and device are provided. An image decoding method performed by an image decoding device according to the present disclosure may comprise the steps of: determining a prediction mode of the current block on the basis of prediction information obtained from a bitstream; on the basis of the prediction mode of the current block, obtaining a flag indicating whether a color space transform is applied to a residual sample of the current block; determining a quantization parameter of the current block on the basis of the flag; and determining a transform coefficient of the current block on the basis of the quantization parameter.