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：US20250054224A1

公开(公告)日：2025-02-13

申请号：US18798982

申请日：2024-08-09

Applicant: Electronics and Telecommunications Research Institute ,  UIF (University Industry Foundation), Yonsei University

Inventor： Ha Hyun LEE ,  Gun Bang ,  Soo Woong Kim ,  Ji Hoon Do ,  Seong Jun Bae ,  Jin Ho Lee ,  Jung Won Kang ,  Young Jung Uh ,  Seo Ha Kim ,  Jung Min Bae ,  Young Sik Yun

IPC: G06T15/20 ,  H04N5/05

Abstract: The present disclosure relates to a method and apparatus for representing dynamic neural radiance fields from unsynchronized videos. A method of acquiring a video at an arbitrary viewpoint based on a dynamic neural radiance fields model according to an embodiment of the present disclosure may comprise: inputting one or more videos acquired from one or more views for one scene into the dynamic neural radiance fields model; inputting a time embedding for the one or more videos into the dynamic neural radiance fields model; and rendering the video at the arbitrary viewpoint based on color information and density information output by the dynamic neural radiance fields model. Herein, time synchronization related to the time embedding may be performed by applying an individual time offset learned for each view, for the one or more views.

公开(公告)号：US12155826B2

公开(公告)日：2024-11-26

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: H04N19/119 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/11 ,  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：US20240348788A1

公开(公告)日：2024-10-17

申请号：US18628969

申请日：2024-04-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY

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

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182

Abstract: Disclosed herein are a method, an apparatus, and a storage medium for image encoding/decoding using geometric partitioning. A target block may be geometrically partitioned, and multiple partitioned regions may be generated from geometric partitioning. Each partitioned region may have a non-square and a non-rectangular shape. Different prediction schemes may be applied to different partitioned regions. The different prediction schemes for multiple partitioned regions may be signaled as explicit information, and may be derived using information about a coding parameter for the target block or the like.

公开(公告)号：US12101476B2

公开(公告)日：2024-09-24

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 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  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.