公开(公告)号：US20230262218A1

公开(公告)日：2023-08-17

申请号：US18139034

申请日：2023-04-25

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.

公开(公告)号：US20230254476A1

公开(公告)日：2023-08-10

申请号：US17926859

申请日：2021-05-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyeong Moon JANG ,  Hendry HENDRY ,  Jung Hak NAM

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/172

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method comprises determining whether a current entry in a reference picture list structure is an inter-layer reference picture (ILRP) entry, determining whether a current layer including a current picture has a plurality of direct reference layers, based on the current entry being the ILRP entry, acquiring a layer index of the current entry for a direct reference layer list from a bitstream, based on the current layer having a plurality of direct reference layers, and determining a direct reference layer including the current entry based on the layer index. The obtaining of the layer index may be skipped based on the current layer doing not have a plurality of direct reference layers.

公开(公告)号：US20230224484A1

公开(公告)日：2023-07-13

申请号：US18009610

申请日：2021-06-07

Applicant: LG Electronics Inc.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan KIM

IPC: H04N19/423 ,  H04N19/70 ,  H04N19/172

CPC classification number: H04N19/423 ,  H04N19/70 ,  H04N19/172

Abstract: According to the disclosure of the present document, a decoded picture buffer (DPB) may be updated on the basis of DPB-related information. The DPB-related information may include a syntax element related to a maximum required size of the DPB. In updating the DPB, a bumping process may be invoked on the basis of a case where a first condition, in which the number of pictures in the DPB is neither greater than nor equal to a value obtained by adding 1 to a value of the syntax element related to the maximum required size of the DPB, is satisfied.

公开(公告)号：US20230224469A1

公开(公告)日：2023-07-13

申请号：US17915799

申请日：2021-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

IPC: H04N19/136 ,  H04N19/105 ,  H04N19/169

CPC classification number: H04N19/136 ,  H04N19/105 ,  H04N19/188

Abstract: An image encoding/decoding method and apparatus is provided. An image decoding method performed by an image decoding apparatus comprises determining reference availability of the parameter set for decoding the image coding data and decoding the image coding data based on the reference availability.

公开(公告)号：US20230171404A1

公开(公告)日：2023-06-01

申请号：US18096414

申请日：2023-01-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/70

Abstract: Provided are an image encoding/decoding method and device. An image decoding method performed by an image decoding device according to the present disclosure includes the steps of: determining a quantization parameter of the current block on the basis of whether color space conversion is applied to a residual sample of the current block; determining a transform coefficient of the current block on the basis of the quantization parameter; determining the residual sample of the current block by using the transform coefficient; and resetting the value of the residual sample on the basis of whether the color space conversion is applied.

公开(公告)号：US20230164344A1

公开(公告)日：2023-05-25

申请号：US18100260

申请日：2023-01-23

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/46 ,  H04N19/172 ,  H04N19/174 ,  H04N19/169

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188

Abstract: An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of acquiring image information through a bitstream; and decoding the current picture on the basis of the image information. The step for acquiring the image information includes the steps of: acquiring a flag indicating whether a picture header (PH) network abstraction layer (NAL) unit for the current picture is present; and acquiring the PH for the current picture on the basis of the flag, wherein the NAL unit including the PH is derived on the basis of the flag.

公开(公告)号：US20230164321A1

公开(公告)日：2023-05-25

申请号：US17915025

申请日：2021-03-15

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Naeri PARK ,  Hyeongmoon JANG ,  Jaehyun LIM ,  Junghak NAM ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/82 ,  H04N19/172 ,  H04N19/46

CPC classification number: H04N19/132 ,  H04N19/82 ,  H04N19/172 ,  H04N19/46

Abstract: According to embodiments of the present document, information for performing in-loop filtering across boundaries can be efficiently signaled. For example, the boundaries may include boundaries of tiles, slices, and/or sub-pictures.

公开(公告)号：US20230156231A1

公开(公告)日：2023-05-18

申请号：US17916653

申请日：2021-04-05

Applicant: LG Electronics Inc.

Inventor： Jung Hak NAM ,  Hendry HENDRY ,  Hyeong Moon JANG ,  Seung Hwan KIM

IPC: H04N19/70 ,  H04N19/503 ,  H04N19/30

CPC classification number: H04N19/70 ,  H04N19/503 ,  H04N19/30

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure is performed by an image decoding apparatus. The image decoding method comprises determining whether a video parameter set (VPS) referenced by a sequence parameter set (SPS) is present, deriving information on inter layer prediction, based on the determination as to whether the video parameter set referenced by the sequence parameter set is present, and reconstructing an image based on the information on inter layer prediction.

公开(公告)号：US20230147872A1

公开(公告)日：2023-05-11

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 ,  H04N19/52 ,  H04N19/43 ,  H04N19/436 ,  H04N19/57

CPC classification number: H04N19/159 ,  H04N19/52 ,  H04N19/43 ,  H04N19/436 ,  H04N19/57 ,  H04N19/105

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.

公开(公告)号：US20230123974A1

公开(公告)日：2023-04-20

申请号：US17784556

申请日：2020-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seunghwan KIM

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/70 ,  H04N19/105 ,  H04N19/86 ,  H04N19/80 ,  H04N19/159 ,  H04N19/503

Abstract: An image decoding method performed by a decoding apparatus, according to the present disclosure, comprises the steps of: obtaining indication information including a first flag which indicates whether signaling of a reference picture list, to be applied to a current block, is applied at a picture level or a slice level; on the basis of the first flag, parsing, from a picture header or a slice header, information related to the signaling of the reference picture list; performing inter-prediction on the basis of the information related to the signaling of the reference picture list so as to derive prediction samples for the current block; and generating, on the basis of the prediction samples, reconstructed samples for the current block.