公开(公告)号：US11477468B2

公开(公告)日：2022-10-18

申请号：US16760609

申请日：2018-10-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo-Young Lee ,  Seung-Hyun Cho ,  Youn-Hee Kim ,  Jin-Wuk Seok ,  Woong Lim ,  Jong-Ho Kim ,  Dae-Yeol Lee ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N7/12 ,  H04N19/42 ,  H04N19/136 ,  G06N3/04 ,  G06N3/08

Abstract: A method and apparatus for image compression using a latent variable are provided. The multiple components of the latent variable may be sorted in order of importance. Through sorting, when the feature information of only some of the multiple components is used, the quality of a reconstructed image may be improved. In order to generate a latent variable, the components of which are sorted in order of importance, learning may be performed in various manners. Also, less important information may be eliminated from the latent variable, and processing, such as quantization, may be applied to the latent variable. Through elimination and processing, the amount of data for the latent variable may be reduced.

公开(公告)号：US11212553B2

公开(公告)日：2021-12-28

申请号：US16768035

申请日：2018-11-28

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: H04N7/18 ,  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：US11166014B2

公开(公告)日：2021-11-02

申请号：US16772443

申请日：2018-12-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun Cho ,  Joo-Young Lee ,  Youn-Hee Kim ,  Jin-Wuk Seok ,  Woong Lim ,  Jong-Ho Kim ,  Dae-Yeol Lee ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/85

Abstract: Disclosed herein are a method and apparatus for video decoding and a method and apparatus for video encoding. A prediction block for a target block is generated by predicting the target block using a prediction network, and a reconstructed block for the target block is generated based on the prediction block and a reconstructed residual block. The prediction network includes an intra-prediction network and an inter-prediction network and uses a spatial reference block and/or a temporal reference block when it performs prediction. For learning in the prediction network, a loss function is defined, and learning in the prediction network is performed based on the loss function.

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：US20240163466A1

公开(公告)日：2024-05-16

申请号：US18397147

申请日：2023-12-27

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

CPC classification number: 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：US11663476B2

公开(公告)日：2023-05-30

申请号：US16772557

申请日：2018-12-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun Cho ,  Youn-Hee Kim ,  Jin-Wuk Seok ,  Joo-Young Lee ,  Woong Lim ,  Jong-Ho Kim ,  Dae-Yeol Lee ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi ,  Je-Won Kang

IPC: G06V10/75 ,  G06N3/08 ,  G06N3/04 ,  G06V10/82 ,  G06F18/214

CPC classification number: G06V10/751 ,  G06F18/214 ,  G06N3/04 ,  G06N3/08 ,  G06V10/82

Abstract: Disclosed herein are a method and apparatus for compressing learning parameters for training of a deep-learning model and transmitting the compressed parameters in a distributed processing environment. Multiple electronic devices in the distributed processing system perform training of a neural network. By performing training, parameters are updated. The electronic device may share the updated parameter thereof with additional electronic devices. In order to efficiently share the parameter, the residual of the parameter is provided to the additional electronic devices. When the residual of the parameter is provided, the additional electronic devices update the parameter using the residual of the parameter.

公开(公告)号：US11503286B2

公开(公告)日：2022-11-15

申请号：US16461943

申请日：2017-11-28

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: H04N19/00 ,  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：US11412225B2

公开(公告)日：2022-08-09

申请号：US16585658

申请日：2019-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo-Young Lee ,  Seung-Hyun Cho ,  Seung-Kwon Beack ,  Hyunsuk Ko ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Jin-Wuk Seok ,  Woong Lim ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/13 ,  H04N19/184 ,  H04N19/196 ,  H04N19/149

Abstract: Disclosed herein is a context-adaptive entropy model for end-to-end optimized image compression. The entropy model exploits two types of contexts. The two types of contexts are a bit-consuming context and a bit-free context, respectively, and these contexts are classified depending on the corresponding context requires the allocation of additional bits. Based on these contexts, the entropy model may more accurately estimate the distribution of each latent representation using a more generalized form of entropy models, thus improving compression performance.

公开(公告)号：US20210329294A1

公开(公告)日：2021-10-21

申请号：US17359737

申请日：2021-06-28

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.