公开(公告)号：US12231634B2

公开(公告)日：2025-02-18

申请号：US17621151

申请日：2020-06-22

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY

Inventor： Gun Bang ,  Jin-Young Lee ,  Woong Lim ,  Hui-Yong Kim

IPC: H04N19/119 ,  H04N19/117 ,  H04N19/172 ,  H04N19/86 ,  H04N19/96

Abstract: Disclosed herein are a method and apparatus for image encoding and image decoding using region segmentation. A picture is divided into multiple sub-pictures, and encoding and/or decoding are performed on the multiple sub-pictures resulting from division. Encoding operations and/or decoding operations on the sub-pictures may be independently performed. Merging and filtering are applied to reconstructed sub-pictures generated by decoding, and a reconstructed picture is generated after processing of merging and filtering.

公开(公告)号：US12034915B2

公开(公告)日：2024-07-09

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

CPC classification number: 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：US11895317B2

公开(公告)日：2024-02-06

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 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

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：US11706408B2

公开(公告)日：2023-07-18

申请号：US17294332

申请日：2019-11-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun Bang ,  Hui Yong Kim

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/597

CPC classification number: H04N19/105 ,  H04N19/137 ,  H04N19/176 ,  H04N19/597

Abstract: Disclosed are region-based image encoding/decoding method and apparatus. The method of decoding an image includes: determining a projection format of a 360-degree video image; determining, on the basis of the determined projection format, a spatial correlation degree between a current block and a neighboring block; and determining, on the basis of the determined spatial correlation degree, a candidate block for predicting the current block.

公开(公告)号：US11570463B2

公开(公告)日：2023-01-31

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：US10957009B2

公开(公告)日：2021-03-23

申请号：US15971467

申请日：2018-05-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun Bang ,  Hui Yong Kim ,  Jin Soo Choi ,  Jung Won Kang

IPC: G06T3/00 ,  H04N5/232 ,  H04N13/271 ,  H04N13/243

Abstract: Disclosed is an apparatus and method of providing an image processing. An image processing method according to the present disclosure includes: obtaining at least one of image information and depth information of an omni-directional video; and mapping the obtained information to a three-dimensional coordinate system based on a particular three-dimensional figure.

公开(公告)号：US11910014B2

公开(公告)日：2024-02-20

申请号：US18091542

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 ,  H04N19/107 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/96

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：US11812013B2

公开(公告)日：2023-11-07

申请号：US17955278

申请日：2022-09-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun Bang ,  Woong Lim

IPC: H04N19/105 ,  H04N19/70 ,  H04N19/174 ,  H04N19/169 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/174 ,  H04N19/188 ,  H04N19/70 ,  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：US11676334B2

公开(公告)日：2023-06-13

申请号：US17111234

申请日：2020-12-03

Applicant: Electronics and Telecommunications Research Institute ,  HANDONG GLOBAL UNIVERCITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun Lee ,  Jung Won Kang ,  Soo Woong Kim ,  Gun Bang ,  Jin Ho Lee ,  Sung Chang Lim ,  Sung Soo Hwang ,  Se Hui Kang ,  Ji Won Moon ,  Mu Hyun Back ,  Jin Kyu Lee ,  Hyun Min Han

IPC: G06T17/00 ,  G06T7/50 ,  G06T7/90

CPC classification number: G06T17/00 ,  G06T7/50 ,  G06T7/90

Abstract: The present invention relates to a plenoptic cloud generation method, the method of generating a plenoptic point cloud according to one embodiment of the present invention, the method comprises, obtaining a two-dimensional (2D) image for each view and depth information obtained from a plurality of cameras, determining a method of generating a plenoptic point cloud and generating the plenoptic point cloud by applying the determined method of generating the plenoptic point cloud to at least one of the 2D image for each view or the depth information, wherein the method of generating the plenoptic point cloud includes at least one of a simultaneous generation method of the point cloud and a sequential generation method of the point cloud.

公开(公告)号：US11102503B2

公开(公告)日：2021-08-24

申请号：US16736197

申请日：2020-01-07

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 ,  H04N19/176 ,  H04N19/184 ,  H04N19/182

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.