公开(公告)号：US20230103067A1

公开(公告)日：2023-03-30

申请号：US18073686

申请日：2022-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Junghak NAM ,  Seunghwan KIM ,  Jaehyun LIM

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/184

Abstract: A method by which a video decoding device decodes a video, according to the present document, comprises the steps of: parsing, from a bitstream, level information indicating the level with which output layer sets comply; acquiring, from the bitstream, constraint information about constraints with which the output layer sets comply; and performing a decoding procedure on the current picture on the basis of the level information and the constraint information, wherein the level information and the constraint information are included in a profile_tier_level syntax structure of the bitstream, and the constraint information in the profile_tier_level syntax structure can be next to the level information.

公开(公告)号：US20230099035A1

公开(公告)日：2023-03-30

申请号：US18075748

申请日：2022-12-06

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Jungsun KIM ,  Chulkeun KIM ,  Byeongmoon JEON ,  Sangoh JEONG

IPC: H04N19/44 ,  H04N19/169 ,  H04N19/31 ,  H04N19/70

Abstract: The present invention includes an image information decoding method which comprises: a step of receiving a bitstream that includes a network abstraction layer (NAL) unit including information related to an encoded image; and a step of parsing an NAL unit header of the NAL unit. The NAL unit header includes layer information including reserved_one_5bits for identifying an extended layer in an extended bitstream and temporal_id for identifying a temporal layer of a bitstream. The reserved_one_5bits of the layer information is received prior to the temporal_id of the layer information. Thus, a method for describing scalability information in a hierarchical bitstream is provided.

公开(公告)号：US20230096855A1

公开(公告)日：2023-03-30

申请号：US17800482

申请日：2021-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI

IPC: H04N19/80 ,  H04N19/172 ,  H04N19/46

Abstract: According to embodiments of the present document, information for performing in-loop filtering by crossing virtual boundaries can be efficiently signaled. In one embodiment, the value of a virtual boundary-related flag signaled through a picture header can be determined on the basis of the value of a virtual boundary-related flag signaled through an SPS.

公开(公告)号：US20230069585A1

公开(公告)日：2023-03-02

申请号：US17955260

申请日：2022-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seung Hwan Kim

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/172 ,  H04N19/423 ,  H04N19/30

Abstract: An image encoding/decoding method and apparatus for signaling a VPS and a recording medium storing a bitstream are provided. An image decoding method may comprise obtaining first information indicating whether each output layer set (OLS) specified by a video parameter set (VPS) includes only one layer, obtaining second information indicating the number of decoded picture buffer (DPB) parameter syntax structures in the VPS, based on the first information, obtaining the DPB parameter syntax structures in the VPS based on the second information, and managing a DPB based on the DPB parameter syntax structures.

公开(公告)号：US20230050232A1

公开(公告)日：2023-02-16

申请号：US17792367

申请日：2021-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY

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

Abstract: According to embodiment(s) of the present document, computational overhead and complexity can be reduced by using a 0th-order exponential Golomb coding scheme (ue(v)) for procedures of parsing syntax elements/information about absolute values of luma/chroma ALF filter coefficients. In addition, coding using ue(v) can be efficiently performed by fixing the range of values of the information about the absolute values of the luma/chroma ALF filter coefficients.

公开(公告)号：US20230033332A1

公开(公告)日：2023-02-02

申请号：US17877032

申请日：2022-07-29

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/136 ,  H04N19/169 ,  H04N19/174

Abstract: Disclosed herein are an image encoding and decoding method and apparatus. The image decoding method may include obtaining video coding layer (VCL) network abstraction layer (NAL) unit type information of a current picture from a bitstream, determining a NAL unit type of each of a plurality of slices included in the current picture, based on the obtained VCL NAL unit type information, and decoding the plurality of slices based on the determined NAL unit type. The current picture may include a first subpicture and a second subpicture having different NAL unit types based on that at least some of the plurality of slices have different NAL unit types, and a NAL unit type of the second subpicture may be determined based on a NAL unit type of the first subpicture.

公开(公告)号：US20230022350A1

公开(公告)日：2023-01-26

申请号：US17949013

申请日：2022-09-20

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghawan KIM

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: obtaining image information from a bitstream; generating a reconstructed picture of the current picture; deriving deblocking filter parameter information related to deblocking filter parameters on the basis of the image information; and performing deblocking filtering on the reconstructed picture on the basis of the deblocking filter parameters so as to generate a modified reconstructed picture.

公开(公告)号：US20230013803A1

公开(公告)日：2023-01-19

申请号：US17779487

申请日：2020-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: A method by which a decoding apparatus decodes an image, according to the present disclosure, can signal slice-associated information on the basis of a flag related to whether there is sub-picture information and a flag related to whether a sub-picture includes a single slice.

公开(公告)号：US20230012751A1

公开(公告)日：2023-01-19

申请号：US17952898

申请日：2022-09-26

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seung Hwan KIM

IPC: H04N19/577 ,  H04N19/176 ,  H04N19/109 ,  H04N19/139 ,  H04N19/52 ,  H04N19/96 ,  H04N19/172

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method includes obtaining inter prediction information of a current block and wraparound information from a bitstream, and generating a prediction block of the current block based on the inter prediction information and the wraparound information. The wraparound information may include a first flag specifying whether wraparound motion compensation is enabled for a current video sequence including the current block. The first flag may have a first value specifying that the wraparound motion compensation is disabled, based on that one or more subpicture, which is coded independently and has a width different from a width of a current picture, is present in the current video sequence.

公开(公告)号：US20220417526A1

公开(公告)日：2022-12-29

申请号：US17778266

申请日：2020-12-29

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/15 ,  H04N19/114 ,  H04N19/187 ,  H04N19/70

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: acquiring image information including decoded picture buffer (DPB) parameter information and an output layer set (OLS) DPB parameter index for a target OLS; deriving the DPB parameter information about the target OLS on the basis of the OLS DPB parameter index; updating a DPB on the basis of the DPB parameter information about the target OLS; and decoding the current picture on the basis of the updated DPB.