公开(公告)号：US20200169726A1

公开(公告)日：2020-05-28

申请号：US16088464

申请日：2017-04-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Youn-Hee KIM ,  Jin-Wuk SEOK ,  Myung-Seok KI ,  Sung-Chang LIM ,  Hui-Yong KIM ,  Jin-Soo CHOI

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

Abstract: Disclosed herein are a method and apparatus for deriving motion prediction information and performing encoding and/or decoding on a video using the derived motion prediction information. Each of an encoding apparatus and a decoding apparatus generates a list for inter prediction of a target block. In the generation of the list, whether motion information of a candidate block is to be added to a list is determined based on information about the target block and the motion information. When the motion information passes a motion prediction boundary check, the motion information is added to the list. By means of the motion prediction boundary check, available motion information for prediction of the target block is selectively added to the list.

公开(公告)号：US20200169691A1

公开(公告)日：2020-05-28

申请号：US16695886

申请日：2019-11-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Se-Yoon JEONG ,  Min Hyuk KIM ,  Shinyoung YI ,  Jung-Won KANG ,  Hui-Yong KIM ,  Hakyeong KIM

IPC: H04N7/00 ,  H04N5/58

Abstract: Disclosed herein are a method and apparatus for luminance-adaptive opto-electrical transfer and luminance-adaptive electro-optical transfer. For video transmission and compression, opto-electrical transfer and electro-optical transfer are required. The surround luminance and luminance range of an image are taken into consideration when performing opto-electrical transfer and electro-optical transfer. An opto-electrical transfer function may be derived based on a contrast sensitivity function that takes into consideration the surround luminance of an image. Also, parameters relevant to surround luminance may be signaled from an encoding apparatus to a decoding apparatus, and an electro-optical transfer function may be derived based on the parameters.

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.

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：US20220272321A1

公开(公告)日：2022-08-25

申请号：US17620563

申请日：2020-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Woong LIM ,  Hui-Yong KIM

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

Abstract: Disclosed herein are a method, apparatus, and storage medium for image encoding/decoding using a reference picture. A reference picture list is configured for encoding/decoding of a target block. Upon configuring the reference picture list, a sequence parameter set and a slice header are used. A picture is divided into sub-pictures and/or slices, and reference picture lists are configured for the sub-pictures and/or slices resulting from division. Reference picture lists for slices may be related to each other, and a current reference picture and a future reference picture in one reference picture list may be used in an additional reference picture list.

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：US20200175668A1

公开(公告)日：2020-06-04

申请号：US16697585

申请日：2019-11-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Se-Yoon JEONG ,  Dae-Yeol LEE ,  Seung-Hyun CHO ,  Hyunsuk KO ,  Youn-Hee KIM ,  Jong-Ho KIM ,  Jin-Wuk SEOK ,  Joo-Young LEE ,  Woong LIM ,  Hui-Yong KIM ,  Jin-Soo CHOI

IPC: G06T7/00 ,  G06T7/13 ,  H04N17/00

Abstract: Disclosed herein are a method and apparatus for measuring video quality based on a perceptually sensitive region. The quality of video may be measured based on a perceptually sensitive region and a change in the perceptually sensitive region. The perceptually sensitive region includes a spatial perceptually sensitive region, a temporal perceptually sensitive region, and a spatio-temporal perceptually sensitive region. Perceptual weights are applied to a detected perceptually sensitive region and a change in the detected perceptually sensitive region. Distortion is calculated based on the perceptually sensitive region and the change in the perceptually sensitive region, and a result of quality measurement for a video is generated based on the calculated distortion.

公开(公告)号：US20200162736A1

公开(公告)日：2020-05-21

申请号：US16684041

申请日：2019-11-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Wuk SEOK ,  Hyunsuk KO ,  Youn-Hee KIM ,  Jong-Ho KIM ,  Joo-Young LEE ,  Woong LIM ,  Se-Yoon JEONG ,  Seung-Hyun CHO ,  Hui-Yong KIM ,  Jin-Soo CHOI

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/184

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In image encoding, encoding using multiple quantization parameters is performed on a transform coefficient. Two quantized coefficients are generated through encoding that uses two quantization parameters. Based on the two quantized coefficients, a quantized coefficient difference is generated. Information about the quantized coefficient difference is transmitted from an encoding apparatus to a decoding apparatus through binary encoding. The information about the quantized coefficient difference may be selectively transmitted. By means of the information about the quantized coefficient difference, a high-quality video may be provided.