公开(公告)号：US20240040112A1

公开(公告)日：2024-02-01

申请号：US18480128

申请日：2023-10-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Woong LIM

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

CPC classification number: H04N19/105 ,  H04N19/70 ,  H04N19/174 ,  H04N19/188 ,  H04N19/46

Abstract: Disclosed herein are a method, an apparatus and a storage medium for performing encoding/decoding on an image using a subpicture. A picture may be partitioned into various units such as subpictures and slices, and various syntax elements and structures may be used to specify the units. In an embodiment, there is a method for configuring a reference picture list for motion compensation in the case where the location of a reference subpicture to be referred to for motion compensation is different from the location of a target subpicture. Further, in an embodiment, there is provided a method for providing the configuration of a reference picture list and an override on the number of activated reference indexes.

公开(公告)号：US20230319271A1

公开(公告)日：2023-10-05

申请号：US18017386

申请日：2021-07-20

Applicant: Electronics and Telecommunications Research Institute ,  KWANGWOON UNIVERSITY INDUSTRY- ACADEMIC COLLABORATION FOUNDATION

Inventor： Woong LIM ,  Gun BANG ,  Dong-Gyu SIM ,  Seoung-Jun OH ,  Jun-Taek PARK ,  Min-Hun LEE

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/60 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/96 ,  H04N19/60 ,  H04N19/176

Abstract: Disclosed herein are a method, an apparatus, and a storage medium for image encoding/decoding using geometric partitioning. Partitioning of a block may be determined using directionality in a block. A straight line is detected in the block, some of partitioning methods available for the block are excluded depending on the type of the detected straight line, and only the remaining partitioning methods are limited to a target of selection for encoding and/or decoding on the target block. Further, the mode of a geometric partitioning mode may be determined using directionality in the block. A straight line is detected in the block, some of available modes of a geometric partitioning mode are excluded depending on the type of the detected straight line, and the remaining modes are limited to the target of selection for encoding and/or decoding on the target block.

公开(公告)号：US20230156220A1

公开(公告)日：2023-05-18

申请号：US18091540

申请日：2022-12-30

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Gun BANG ,  Won Sik CHEONG ,  Gi Mun UM ,  Nam Ho HUR ,  Gwang Hoon PARK ,  Kyung Yong KIM

IPC: H04N19/593 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/107 ,  H04N19/44

CPC classification number: H04N19/593 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/107 ,  H04N19/44

Abstract: Disclosed are an image encoding method using a skip mode and a device using the method. The image encoding method may comprise the steps of: judging whether there is residual block data of a prediction target block on the basis of predetermined data indicating whether residual block data has been encoded; and, if there is residual block data, restoring the prediction target block on the basis of the residual block data and an intra-screen predictive value of the prediction target block. Consequently, encoding and decoding efficiency can be increased by carrying out the encoding and decoding of screen residual data only for prediction target blocks where there is a need for a residual data block in accordance with screen similarity.

公开(公告)号：US20230146531A1

公开(公告)日：2023-05-11

申请号：US18085678

申请日：2022-12-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Gun BANG ,  Hui Yong KIM ,  Gwang Hoon PARK ,  Woo Woen GWUN ,  Tae Hyun KIM ,  Won Jun LEE

IPC: H04N19/517 ,  H04N19/184 ,  H04N19/182 ,  H04N19/176

CPC classification number: H04N19/517 ,  H04N19/184 ,  H04N19/182 ,  H04N19/176

Abstract: There is provided a method of decoding an image, the method comprising: decoding information for motion information prediction of a current block from a bitstream, predicting motion information of the current block based on the information, refining motion information of the current block by using the decoded information and the predicted motion information of the current block and reconstructing the current block based on the refined motion information of the current block.

公开(公告)号：US20230015638A1

公开(公告)日：2023-01-19

申请号：US17779478

申请日：2020-11-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Soo Woong KIM ,  Gun BANG ,  Ha Hyun LEE ,  Sung Chang LIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/159 ,  H04N19/186 ,  H04N19/593

Abstract: Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method includes acquiring a partitioning index of a current block from a bitstream, and generating a prediction sample of the current block by weighted-summing a prediction sample of a first subblock of the current block and a prediction sample of a second subblock of the current block based on the partitioning index. The partitioning index indicates a partitioning distance and a partitioning direction included in a predefined table.

公开(公告)号：US20220408085A1

公开(公告)日：2022-12-22

申请号：US17778351

申请日：2020-11-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Soo Woong KIM ,  Gun BANG ,  Jin Ho LEE ,  Ha Hyun LEE

IPC: H04N19/117 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70 ,  H04N19/172 ,  H04N19/82

Abstract: The present invention relates to a video decoding method, according to embodiment of the invention, image decoding method comprises, acquiring a reconstructed luma block of a current block, determining whether a cross-component adaptive loop filter is applied to the current block, acquiring a reconstructed chroma block of the current block, to which an adaptive loop filter is applied, when the cross-component adaptive loop filter is applied to the current block and acquiring a final reconstructed chroma block of the current block, to which the cross-component loop filter is applied, using the reconstructed luma block and the reconstructed chroma block, to which the adaptive loop filter is applied.

公开(公告)号：US20220311996A1

公开(公告)日：2022-09-29

申请号：US17621174

申请日：2020-06-22

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Gun BANG ,  Gwang-Hoon PARK ,  Woong LIM ,  Hui-Yong KIM ,  Woo-Woen GWUN ,  Tae-Hyun KIM ,  Dae-Young LEE ,  Won-Jun LEE

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed herein are a method and apparatus for image encoding and decoding using prediction based on a block shape. Whether a prediction mode is available for a target block is determined. The determination is performed based on the shape of the target block. When the prediction mode is determined to be unavailable for the target block, signaling related to the prediction mode may be omitted, and determination of an additional prediction mode is performed. When the prediction mode is determined to be available for the target block, information indicating whether the prediction mode is to be used for the target block is signaled.

公开(公告)号：US20220248029A1

公开(公告)日：2022-08-04

申请号：US17613405

申请日：2020-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woong LIM ,  Gun BANG ,  Hui Yong KIM

IPC: H04N19/14 ,  H04N19/169 ,  H04N19/176 ,  H04N19/174

Abstract: Disclosed herein are an image encoding/decoding method and apparatus, and a recording medium storing a bitstream. The image decoding method according to the present invention includes: deriving slice mode information for at least one slice comprised in a current picture; deriving information on the number of slices based on the slice mode information; deriving tile information of a current slice based on the information on the number of slices; and, decoding the current slice based on the tile information. Herein, the tile information includes tile index presence information and tile index difference value information, and the tile index difference value information is not signaled for a last slice included in the current picture.

公开(公告)号：US20210344946A1

公开(公告)日：2021-11-04

申请号：US17378075

申请日：2021-07-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Gun BANG ,  Hui Yong KIM ,  Gwang Hoon PARK ,  Woo Woen GWUN ,  Tae Hyun KIM ,  Won Jun LEE

IPC: H04N19/517 ,  H04N19/184 ,  H04N19/182 ,  H04N19/176

Abstract: There is provided a method of decoding an image, the method comprising: decoding information for motion information prediction of a current block from a bitstream, predicting motion information of the current block based on the information, refining motion information of the current block by using the decoded information and the predicted motion information of the current block and reconstructing the current block based on the refined motion information of the current block.

公开(公告)号：US20180352256A1

公开(公告)日：2018-12-06

申请号：US16058117

申请日：2018-08-08

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Foundation of Kyung Hee University

Inventor： Gun BANG ,  Gwang Soon LEE ,  Nam Ho HUR ,  Kyung Yong KIM ,  Young Su HEO ,  Gwang Hoon PARK ,  Yoon Jin LEE

IPC: H04N19/597 ,  H04N19/139 ,  H04N19/70 ,  H04N19/52 ,  H04N19/176 ,  H04N19/105 ,  H04N19/463 ,  H04N19/187

Abstract: A method for decoding a video including a plurality of views, according to one embodiment of the present invention, comprises the steps of: configuring a base merge motion candidate list by using motion information of neighboring blocks and a time correspondence block of a current block; configuring an extended merge motion information list by using motion information of a depth information map and a video view different from the current block; and determining whether neighboring block motion information contained in the base merge motion candidate list is derived through view synthesis prediction.