公开(公告)号：US20230169692A1

公开(公告)日：2023-06-01

申请号：US17981251

申请日：2022-11-04

Applicant: Electronics and Telecommunications Research Institute

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

IPC: G06T9/00 ,  G06T9/40

CPC classification number: G06T9/001 ,  G06T9/40

Abstract: Disclosed herein are an apparatus and method for compressing 3D volume data. The apparatus for compressing three-dimensional (3D) volume data includes one or more processor, and execution memory configured to store at least one program that is executed by the one or more processors, wherein the at least one program is configured to receive 3D volume data for data compression, select necessary voxels that contribute to formation of a geometric surface from the 3D volume data using a marching cubes algorithm, represent location information of the selected necessary voxels by a tree structure, and binarize the location information of the necessary voxels by serializing the tree structure, and quantize truncated signed distance values to surfaces adjacent to the necessary voxels constituting a volume from the 3D volume data using the binarized location information of the necessary voxels.

公开(公告)号：US20210136395A1

公开(公告)日：2021-05-06

申请号：US16770534

申请日：2018-12-07

Applicant: Electronics and Telecommunications Research Institute ,  RESEARCH AND BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventor： Dong-San JUN ,  Jung-Won KANG ,  Hyunsuk KO ,  Sung-Chang LIM ,  Jin-Ho LEE ,  Ha-Hyun LEE ,  Byeung-Woo JEON ,  Hui-Yong KIM ,  Jee-Yoon PARK

IPC: H04N19/44 ,  H04N19/122 ,  H04N19/60 ,  H04N19/593 ,  H04N19/119

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved.

公开(公告)号：US20240223770A1

公开(公告)日：2024-07-04

申请号：US18583200

申请日：2024-02-21

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

Inventor： Sung-Chang LIM ,  Jung-Won KANG ,  Hyunsuk KO ,  Jin-HO LEE ,  Ha-Hyun LEE ,  Dong-San JUN ,  Hui-Yong KIM ,  Yung-Lyul LEE ,  Nam-UK KIM ,  Jae-Gon KIM

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.

公开(公告)号：US20240137511A1

公开(公告)日：2024-04-25

申请号：US18403918

申请日：2024-01-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Jin-Ho LEE ,  Jung-Won KANG ,  Hyunsuk KO ,  Sung-Chang LIM ,  Dong-San JUN ,  Ha-Hyun LEE ,  Seung-Hyun CHO ,  Hui-Yong KIM ,  Hae-Chul CHOI ,  Dae-Hyeok GWON ,  Jae-Gon KIM ,  A-Ram BACK

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/124 ,  H04N19/593 ,  H04N19/61

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/124 ,  H04N19/593 ,  H04N19/61 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

公开(公告)号：US20220078485A1

公开(公告)日：2022-03-10

申请号：US17529757

申请日：2021-11-18

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Hyunsuk KO ,  Jung-Won KANG ,  Sung-Chang LIM ,  Jin-Ho LEE ,  Ha-Hyun LEE ,  Dong-San JUN ,  Hae-Chul CHOI ,  Hui-Yong KIM ,  A-Ram BACK

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159 ,  H04N19/182

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.

公开(公告)号：US20210021816A1

公开(公告)日：2021-01-21

申请号：US16983218

申请日：2020-08-03

Applicant: Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University ,  Industry-Academia Cooperation Group of Sejong University

Inventor： Jin-Ho LEE ,  Jae-Gon KIM ,  Jung-Won KANG ,  Do-Hyeon PARK ,  Yung-Lyul LEE ,  Ha-Hyun LEE ,  Sung-Chang LIM ,  Hui-Yong KIM ,  Ji-Hoon DO ,  Yong-Uk YOON

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/105

Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus for deriving an intra-prediction mode. An intra-prediction mode may be derived using a method for deriving an intra-prediction mode based on a neighbor block of the target block, a method for deriving an intra-prediction mode using signaling of the intra-prediction mode of the target block, or a method for deriving an adaptive intra-prediction mode based on the type of a target slice. An MPM list may be used to derive the intra-prediction mode, and a temporal neighbor block or the like may be used to configure the MPM list.

公开(公告)号：US20230082092A1

公开(公告)日：2023-03-16

申请号：US17768186

申请日：2020-10-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung-Won KANG ,  Sung-Chang LIM ,  Jin-Ho LEE ,  Ha-Hyun LEE

IPC: H04N19/12 ,  H04N19/60 ,  H04N19/176 ,  H04N19/463 ,  H04N19/169 ,  H04N19/119 ,  H04N19/157 ,  H04N19/186

Abstract: Disclosed herein are a method, an apparatus and a storage medium for transform information encoding/decoding. A transform includes a primary transform and a secondary transform. A primary transform method and a secondary transform method are selected from among multiple different methods. A transform is performed on a target block based on a selected primary transform method and a selected secondary transform method. A primary transform method and a secondary transform method applied to the target block may be signaled using transform information such as a primary transform method index and a secondary transform method index.

公开(公告)号：US20220272368A1

公开(公告)日：2022-08-25

申请号：US17695648

申请日：2022-03-15

Applicant: Electronics and Telecommunications Research Institute ,  RESEARCH AND BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventor： Dong-San JUN ,  Jung-Won KANG ,  Hyunsuk KO ,  Sung-Chang LIM ,  Jin-Ho LEE ,  Ha-Hyun LEE ,  Byeung-Woo JEON ,  Hui-Yong KIM ,  Jee-Yoon PARK

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/122 ,  H04N19/186 ,  H04N19/593 ,  H04N19/60 ,  H04N19/82

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved.

公开(公告)号：US20200322628A1

公开(公告)日：2020-10-08

申请号：US16753155

申请日：2018-10-10

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Jin-Ho LEE ,  Jung-Won KANG ,  Hyunsuk KO ,  Sung-Chang LIM ,  Ha-Hyun LEE ,  Dong-San JUN ,  Hui-Yong KIM ,  Jae-Gon KIM ,  Do-Hyeon PARK ,  Yong-Uk YOON

IPC: H04N19/573 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, inter-prediction information for a target block may be derived, and inter prediction for a target block may be performed using the derived inter-prediction information. Combined inter-prediction information may be performed by combining multiple pieces of inter-prediction information, and the combined inter-prediction information may be added as a candidate to a list used for inter prediction. One of candidates in the list may be selected for inter prediction for the target block, and inter prediction using the selected candidate may be performed.

公开(公告)号：US20200029077A1

公开(公告)日：2020-01-23

申请号：US16494507

申请日：2018-03-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Jin-Ho LEE ,  Jung-Won KANG ,  Hyunsuk KO ,  Sung-Chang LIM ,  Dong-San JUN ,  Ha-Hyun LEE ,  Seung-Hyun CHO ,  Hui-Yong KIM ,  Hae-Chul CHOI ,  Dae-Hyeok GWON ,  Jae-Gon KIM ,  A-Ram BACK

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/593 ,  H04N19/124 ,  H04N19/61

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.