公开(公告)号：US10827173B2

公开(公告)日：2020-11-03

申请号：US16188587

申请日：2018-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04N19/124 ,  H04N19/70

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In quantization and dequantization, multiple quantization methods and multiple dequantization methods may be used. The multiple quantization methods include a variable-rate step quantization method and a fixed-rate step quantization method. The variable-rate step quantization method may be a quantization method in which an increment in a quantization step depending on an increase in a value of a quantization parameter by 1 is not fixed. The fixed-rate step quantization method may be a quantization method in which the increment in the quantization step depending on the increase of the value of the quantization parameter by 1 is fixed.

公开(公告)号：US11665363B2

公开(公告)日：2023-05-30

申请号：US17535926

申请日：2021-11-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyoung-Jin Kwon ,  Ji-Hoon Do ,  Dong-Hyun Kim ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Joo-Young Lee ,  Se-Yoon Jeong ,  Jin-Soo Choi ,  Tae-Jin Lee ,  Jee-Hoon Kim ,  Dong-Gyu Sim ,  Seoung-Jun Oh ,  Min-Hun Lee ,  Yun-Gu Lee ,  Han-Sol Choi ,  Kwang-Hwan Kim

IPC: H04N19/503 ,  H04N19/11

CPC classification number: H04N19/503 ,  H04N19/11

Abstract: Disclosed herein are a method, apparatus, system, and computer-readable recording medium for image compression. An encoding apparatus performs preprocessing of feature map information, frame packing, frame classification, and encoding. A decoding apparatus performs decoding, frame depacking, and postprocessing in order to reconstruct feature map information. By encoding the feature map information, inter-prediction and intra-block prediction for a frame are performed. The encoding apparatus provides the decoding apparatus with a feature map information bitstream for reconstructing the feature map information along with an image information bitstream.

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：US10484689B2

公开(公告)日：2019-11-19

申请号：US15015456

申请日：2016-02-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Wuk Seok ,  Myung-Seok Ki ,  Youn-Hee Kim ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/147 ,  H04N19/103 ,  H04N19/176 ,  H04N19/15

Abstract: An apparatus and method perform rate-distortion optimization based on cost. The encoding apparatus selects an encoding mode to be used to encode a target block from among multiple modes and performs computation for rate-distortion optimization in the encoding mode. The encoding apparatus calculates a cost of at least one of the multiple modes in relation to the encoding of the target block, and selects the encoding mode from among the multiple modes, based on the cost.