公开(公告)号：US20230052774A1

公开(公告)日：2023-02-16

申请号：US17782568

申请日：2020-12-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Youn-Hee KIM ,  Seung-Hyun CHO ,  Hyunsuk KO ,  Hyoung-Jin KWON ,  Dong-Hyun KIM ,  Jong-Ho KIM ,  Joo-Young LEE ,  Se-Yoon JEONG ,  Tae-Jin LEE ,  Jin-Soo CHOI

IPC: H04N19/30 ,  H04N19/119 ,  H04N19/17 ,  H04N19/147 ,  H04N19/14 ,  H04N19/42

Abstract: Disclosed herein are a video-decoding method and apparatus and a video encoding method and apparatus, and more particularly a method and an apparatus which perform region-differential image encoding/decoding using a recovered image. In accordance with an encoding method according to an embodiment, a recovered low-quality image is generated by performing encoding on an original image and a recovered high-quality image is generated using the recovered low-quality image. An image is segmented into multiple regions, and encoded reconstruction information for generating a reconstructed high-quality image is generated by performing encoding on the image.

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：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.

公开(公告)号：US20240236319A9

公开(公告)日：2024-07-11

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：US20230421804A1

公开(公告)日：2023-12-28

申请号：US18462638

申请日：2023-09-07

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

CPC classification number: 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：US20230032574A1

公开(公告)日：2023-02-02

申请号：US17965160

申请日：2022-10-13

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

Inventor： Sung-Chang LIM ,  Jung-Won KANG ,  Hyunsuk KO ,  Jin-Ho LEE ,  Ha-Hyun LEE ,  Dong-San JUN ,  Seung-Hyun CHO ,  Hui-Yong KIM ,  Yung-Lyul LEE ,  Jun-Woo CHOI ,  Jin-Soo CHOI ,  Nam-Uk KIM ,  Myung-Jun KIM

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/44 ,  H04N19/80 ,  H04N19/70 ,  H04N19/513 ,  H04N19/19 ,  H04N19/122 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information.

公开(公告)号：US20220353509A1

公开(公告)日：2022-11-03

申请号：US17864226

申请日：2022-07-13

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-ACADEMIA COOPERATION 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 ,  H04N19/176 ,  H04N19/119 ,  H04N19/159

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：US20220277491A1

公开(公告)日：2022-09-01

申请号：US17615519

申请日：2020-05-29

Applicant: Electronics and Telecommunications Research Institute

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

IPC: G06T9/00 ,  G06T3/40

Abstract: Disclosed herein are a method and apparatus for image compression based on machine learning using a global context. The disclosed image compression network employs an existing image quality enhancement network for an end-to-end joint learning scheme. The image compression network may jointly optimize image compression enhancement and quality enhancement. The image compression networks and image quality enhancement networks may be easily combined within a unified architecture which minimizes total loss, and may be easily jointly optimized.