公开(公告)号：US20230353741A1

公开(公告)日：2023-11-02

申请号：US18220014

申请日：2023-07-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/176 ,  H04N19/91 ,  H04N19/112 ,  H04N19/129

CPC classification number: H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/176 ,  H04N19/91 ,  H04N19/112 ,  H04N19/129 ,  H04N19/70

Abstract: The present invention relates to a video encoding method, to a video decoding method, and to an apparatus using same. The video encoding method according to the present invention comprises the steps of: setting a tile and a slice for the inputted current picture; performing encoding based on the tile and the slice; and a step of transmitting the encoded video information. The current picture may include one or more tiles and one or more slices. The largest coding units (hereinafter, referred to as LCUs) in the slice may be arranged based on a tile scan.

公开(公告)号：US20230344986A1

公开(公告)日：2023-10-26

申请号：US18215565

申请日：2023-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46

Abstract: According to embodiments described herein, sub-pictures and/or virtual boundaries can be used for coding an image. For example, sub-pictures in the current picture can be used for predicting, reconstructing, and/or filtering the current picture. Virtual boundaries can be used for filtering reconstructed samples of the current picture. Through image coding based on the subpictures and/or virtual boundaries according to embodiments described herein, the subjective/objective quality of an image can be improved, and the consumption of hardware resources necessary for the coding can be reduced.

公开(公告)号：US20230336783A1

公开(公告)日：2023-10-19

申请号：US18025593

申请日：2021-09-29

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

IPC: H04N19/70 ,  H04N21/435 ,  H04N19/169 ,  H04N19/30 ,  H04N21/6437

CPC classification number: H04N19/70 ,  H04N21/435 ,  H04N19/188 ,  H04N19/30 ,  H04N21/6437

Abstract: A media file generating/receiving method and apparatus for signaling operating point information and a method of transmitting a media file are provided. A media file receiving method comprises obtaining operating point information of video data from a media file and processing the video data based on the obtained operating point information. The obtaining the operating point information may comprise obtaining first information specifying a number of output layer sets for the video data, obtaining second information on the output layer sets based on the first information, obtaining third information specifying a number of operating points for the output layer sets, and obtaining fourth information on output layer sets associated with the operating points based on the third information.

公开(公告)号：US20230336765A1

公开(公告)日：2023-10-19

申请号：US18211930

申请日：2023-06-20

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seung Hwan KIM

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus comprises 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 comprise a first flag specifying whether wraparound motion compensation is enabled for a current picture including the current block. Based on the first flag having a predetermined value specifying that the wraparound motion compensation is enabled for the current picture, the prediction block may be generated by performing the wraparound motion compensation, and the wraparound motion compensation may be performed based on either boundaries of a current subpicture including the current block or boundaries of a reference picture of the current block, based on whether the current subpicture is independently coded or not.

公开(公告)号：US20230300339A1

公开(公告)日：2023-09-21

申请号：US18200305

申请日：2023-05-22

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

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

CPC classification number: H04N19/136 ,  H04N19/174 ,  H04N19/188

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：US20230291892A1

公开(公告)日：2023-09-14

申请号：US18198159

申请日：2023-05-16

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining image information including an output layer set (OLS) decoded picture buffer (DPB) parameter index for a target OLS and DPB parameter information; deriving DPB parameter information for the target OLS on the basis of the OLS DPB parameter index; performing a picture management process on pictures of a DPB on the basis of the DPB parameter information for the target OLS; configuring a reference picture list for a current picture on the basis of the pictures of the DPB; and performing an inter prediction on a block in the current picture on the basis of the reference picture list.

公开(公告)号：US20230276065A1

公开(公告)日：2023-08-31

申请号：US17916260

申请日：2021-03-31

Applicant: LG Electronics Inc.

Inventor： Hendry HENDRY ,  Seung Hwan KIM ,  Seethal PALURI

IPC: H04N19/46 ,  H04N19/172 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/82

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/105 ,  H04N19/119 ,  H04N19/167 ,  H04N19/82

Abstract: Provided is an image encoding/decoding method and apparatus. The image decoding method comprises obtaining subpicture information from a bitstream, deriving one or more subpictures in a current picture based on the subpicture information, and decoding a current subpicture in the current picture based on the subpicture information. The subpicture information may comprise a first flag specifying whether each of the one or more subpictures is treated as a picture, and, based on the bitstream including at least one first layer referring to a current layer including the current picture, the first flag for the first subpicture included in a first layer and corresponding to the current subpicture, and the first flag for the current subpicture have the same value.

公开(公告)号：US20230217015A1

公开(公告)日：2023-07-06

申请号：US18120637

申请日：2023-03-13

Applicant: LG ELECTRONICS INC.

Inventor： Seethal PALURI ,  Hendry HENDRY ,  Jie ZHAO ,  Seunghwan KIM

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method executed by a video decoding apparatus according to the present document comprises the steps of: parsing a flag associated with weighted prediction from a bitstream; on the basis of the flag, parsing a prediction weighted table syntax from the bitstream; and on the basis of the prediction weighted table syntax, executing a weighted prediction on a current block in a current picture to reconstruct the current picture, wherein on the basis of the value of the flag being 1, the prediction weighted table syntax may be parsed from a picture header of the bitstream, and on the basis of the value of the flag being 0, the prediction weighted table syntax may be parsed from a slice header of the bitstream.

公开(公告)号：US20230209071A1

公开(公告)日：2023-06-29

申请号：US17927296

申请日：2021-05-25

Applicant: LG ELECTRONICS INC.

Inventor： Hendry HENDRY

IPC: H04N19/31 ,  H04N19/172 ,  H04N19/70 ,  H04N19/169

CPC classification number: H04N19/31 ,  H04N19/172 ,  H04N19/70 ,  H04N19/188

Abstract: According to embodiment(s) of the present document, multilayer-based coding can be performed. Multilayer-based coding can output a decoded picture based on a target output layer, and the target output layer, for example, can be determined on the basis of an external means or signaling information. According to one embodiment of the present document, the external means can be preferentially used, for the target output layer, more than the signaling information.

公开(公告)号：US20230188707A1

公开(公告)日：2023-06-15

申请号：US17926402

申请日：2021-05-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04N19/105 ,  H04N19/172 ,  H04N19/132 ,  H04N19/503 ,  H04N19/159 ,  H04N19/176 ,  H04N19/31 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/31 ,  H04N19/46 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503

Abstract: An image decoding method according to the present document comprises a step of deriving POC values for the current picture and reference pictures on the basis of POC information, wherein the POC information includes a maximum LSB value of POC, information about the reference pictures includes a non-reference picture flag related to whether a picture is not used as a reference picture, the value of the non-reference picture flag of the previous picture used for deriving the POC value of the current picture is zero, and the difference between the POC values of the current picture and the previous picture is less than half of the maximum LSB value of POC.