公开(公告)号：US12289463B2

公开(公告)日：2025-04-29

申请号：US18371232

申请日：2023-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seung Hwan Kim

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

Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method includes obtaining, from a bitstream, network abstraction layer (NAL) unit type information of at least one NAL unit including coded image data, determining at least one NAL unit type of one or more slices in the current picture based on the obtained NAL unit type information, and decoding the current picture based on the determined NAL unit type. The current picture is determined to be a random access skipped leading (RASL) picture, based on the determined NAL unit type including a RASL picture NAL unit type (RASL_NUT). When an intra random access point (IRAP) picture associated with the RASL picture is a first picture in decoding order, the RASL picture is decoded, based on the RASL picture including one or more slices having a random access decodable leading (RADL) picture NAL unit type (RADL_NUT).

公开(公告)号：US12267501B2

公开(公告)日：2025-04-01

申请号：US18378772

申请日：2023-10-11

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: obtaining image information from a bitstream, wherein the image information includes a picture header associated with a current picture, and the current picture includes a plurality of slices; parsing at least one of a first flag and a second flag from the picture header; generating prediction samples by performing at least one of intra prediction and inter prediction on a current block in the current picture on the basis of at least one of the first flag and the second flag; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture on the basis of the reconstructed samples.

公开(公告)号：US12267485B2

公开(公告)日：2025-04-01

申请号：US18382246

申请日：2023-10-20

Applicant: LG Electronics Inc.

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: parsing, from a bitstream, flags associated with weighted prediction; parsing a prediction weighted table syntax from a picture header of the bitstream on the basis of the flags; generating prediction samples regarding a current block in a current picture on the basis of syntax elements in the prediction weighted table syntax; and generating reconstructed samples on the basis of the prediction samples, wherein the flags comprise a first flag associated with whether the weighted prediction is applied to slices referring to a picture parameter set of the bitstream, and a second flag associated with whether information related to the weighted prediction is present in the picture header, and the second flag may be parsed from the picture parameter set on the basis of the first flag.

公开(公告)号：US12262046B2

公开(公告)日：2025-03-25

申请号：US17801497

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/109 ,  H04N19/174 ,  H04N19/176 ,  H04N19/577 ,  H04N19/70

Abstract: An image decoding method and apparatus according to the present disclosure can determine an inter-prediction mode of a current block, derive motion information of the current block according to the determined inter-prediction mode, and obtain a prediction block of the current block, on the basis of the derived motion information.

公开(公告)号：US20250071290A1

公开(公告)日：2025-02-27

申请号：US18946256

申请日：2024-11-13

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim

IPC: H04N19/136 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: obtaining prediction-related information and indication information comprising a first flag which indicates whether or not a sample adaptive offset (SAO) process to be applied to a current block is applied at a picture level or a slice level; parsing information related to the SAO process from a picture header or a slice header on the basis of the first flag; generating prediction samples for the current block on the basis of the prediction-related information; generating reconstructed samples for the current block on the basis of the prediction samples; and performing the SAO process for the reconstructed samples on the basis of the information related to the SAO process.

公开(公告)号：US12225216B2

公开(公告)日：2025-02-11

申请号：US18662881

申请日：2024-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/70

Abstract: According to the disclosure of the present document, chroma quantization parameter offset-related information can be signaled through palette syntax coding, and index information for a chroma quantization parameter offset list can be efficiently parsed/signaled on the basis of information about the number of entries in the chroma quantization parameter offset list. Accordingly, bits that are required to be signaled in order to code a video/image can be reduced, and the coding efficiency can be enhanced.

公开(公告)号：US20250039464A1

公开(公告)日：2025-01-30

申请号：US18918389

申请日：2024-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/50 ,  H04N19/82

Abstract: According to embodiments of the present document, a zero-order exponential Golomb coding scheme(ue(v)) is used for a parsing procedure of an information/syntax element related to luma/chroma ALF filter coefficient absolute values, so that operational overhead and complexity can be reduced. In addition, since the range of values of the information related to the luma/chroma ALF filter coefficient absolute values is fixed, coding that uses ue(v) can be efficiently performed.

公开(公告)号：US12184880B2

公开(公告)日：2024-12-31

申请号：US17915928

申请日：2021-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seethal Paluri ,  Seung Hwan Kim

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/184 ,  H04N19/31

Abstract: An image encoding/decoding method and apparatus is provided. The image decoding method performed by the image decoding apparatus may comprise determining inter-layer direct reference and determining the number of sublayers of a current layer based on the inter-layer direct reference.

公开(公告)号：US12184836B2

公开(公告)日：2024-12-31

申请号：US17788471

申请日：2020-12-10

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/174 ,  H04N19/70

Abstract: According to the disclosure of the present document, on the basis of NAL unit type-associated information on whether a picture has mixed NAL unit types, NAL unit types for slices within the picture can be determined, and for the picture having the mixed NAL unit types, not only IRAP but also a form mixed with NAL units of other types can be provided.

公开(公告)号：US12155854B2

公开(公告)日：2024-11-26

申请号：US17783438

申请日：2020-11-12

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Seunghwan Kim

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/172 ,  H04N19/174

Abstract: Systems and techniques in which information/parameters associated with an entry point can be signaled on the basis of a WPP-associated entry point offset-present flag and a tile-associated entry point offset-present flag, and the effect of increasing coding efficiency, which is the primary purpose of parallel processing in encoding/decoding, can be derived therefrom.