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公开(公告)号：US20230336710A1
公开(公告)日：2023-10-19
申请号：US18084188
申请日：2022-12-19
Inventor： Joon-Soo KIM , Joung-Il YUN
IPC: H04N19/103 , G06T9/00 , G06V10/44 , G06V10/74 , G06V10/764 , G06V10/771 , H04N19/513
CPC classification number: H04N19/103 , G06T9/00 , G06V10/44 , G06V10/761 , G06V10/764 , G06V10/771 , H04N19/513
Abstract: Disclosed herein are an image compression method and apparatus for machine vision. The image compression method includes determining a prediction mode for frames of an input image, generating a prediction frame and a residual image using an input frame, generating a reconstructed frame by adding the prediction frame to the residual image, extracting respective features of the input frame and the reconstructed frame, correcting the reconstructed frame based on a difference value between the extracted features and a bit rate of the residual image, and encoding the corrected frame.
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公开(公告)号：US20230214957A1
公开(公告)日：2023-07-06
申请号：US17852455
申请日：2022-06-29
Inventor： Sang-Woon KWAK , Joung-Il YUN
CPC classification number: G06T3/0093 , G06T5/005 , G06T5/50 , G06T2207/10028 , G06T2207/10024
Abstract: Disclosed herein is a method for blending warped images based on depth distribution. The method includes generating images warped to a virtual viewpoint using input images, generating a blended warped image based on the warped images, and generating a final virtual viewpoint image by applying inpainting to the blended warped image.
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公开(公告)号：US20230164337A1
公开(公告)日：2023-05-25
申请号：US17980135
申请日：2022-11-03
Inventor： Sang-Woon KWAK , Joung-Il YUN
IPC: H04N19/42 , H04N19/132 , H04N19/103
CPC classification number: H04N19/42 , H04N19/132 , H04N19/103
Abstract: Disclosed herein is a method for adaptive image preprocessing and reconstruction. The method includes preprocessing an input image, encoding and decoding the preprocessed image, and reconstructing the encoded and decoded image. Here, preprocessing the input image may be performed using a preprocessing kernel generated based on a control parameter indicating a weight for human vision and machine vision.
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4.发明申请公开(公告)号：US20180034591A1
公开(公告)日：2018-02-01
申请号：US15421295
申请日：2017-01-31
Inventor： Joung-Il YUN , Sang-Woon KWAK , Myung-Sun BAEK , Hae-Chan KWON , Hyoung-Soo LIM , Nam-Ho HUR , Nam-Shik KIM , Bi-Woong CHUNG
CPC classification number: H04L27/01 , H04B1/71072 , H04L1/005 , H04L1/0054 , H04L25/03006 , H04L25/03834 , H04L25/068
Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
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Patent Agency Ranking
公开(公告)号：US20220335713A1
公开(公告)日：2022-10-20
申请号：US17722741
申请日：2022-04-18
Inventor： Sang-Woon KWAK , Joung-Il YUN
Abstract: Disclosed herein is a method for encoding a feature map. The method may include arranging multiple channels based on similarity therebetween for a feature map having the multiple channels, rearranging the arranged multiple channels so as to be adjacent to each other in a feature map channel having a matrix form, and generating an encoded feature map by converting a feature value corresponding to the feature map channel from a real number to an integer.
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公开(公告)号：US20220108127A1
公开(公告)日：2022-04-07
申请号：US17459797
申请日：2021-08-27
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Hanbat National University Industry-Academic Cooperation Foundation
Inventor： Hae-Chul CHOI , Sang-Woon KWAK , Joung-Il YUN , Hee-Ji HAN
Abstract: Disclosed herein are an apparatus for encoding and decoding a feature map and a method using the apparatus. The feature map encoding apparatus include a processor for acquiring feature map information corresponding to a feature map, reconstructing the feature map based on the feature map information, and generating an encoded feature map by converting each feature value corresponding to the reconstructed feature map from a real number into an integer, and a memory for storing the feature map information.
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公开(公告)号：US20250168630A1
公开(公告)日：2025-05-22
申请号：US18769784
申请日：2024-07-11
Inventor： Joung-Il YUN , Byoung-Koo Kim , Seung-Yong Yoon
IPC: H04W12/0431 , H04L9/08
Abstract: Disclosed herein is an apparatus and method for drone control data security. The apparatus includes memory in which at least one program is recorded and a processor for executing the program. The program may encrypt control data in a unit of a block based on a counter block configured using a nonce value and transmit the encrypted control data to a drone along with a nonce change reference counter value, the nonce value initialized to an initial nonce value may change sequentially according to a predetermined sequence each time the control data in a unit of a block is encrypted, and the nonce change reference counter value may increase each time the nonce value changes.
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公开(公告)号：US20190013972A1
公开(公告)日：2019-01-10
申请号：US15902909
申请日：2018-02-22
Inventor： Myung-Sun BAEK , Joung-Il YUN , Sang-Woon KWAK , Hae-Chan KWON , Young-Su KIM , Hyoung-Soo LIM , Nam-Ho HUR
IPC: H04L25/03 , H04L1/06 , H04B1/7097 , H04W28/02 , H04W72/08
Abstract: Disclosed herein are an apparatus and method for providing FTN communication using transmit diversity. A transmission apparatus generates a signal to be output through diversity modulation. A diversity order of diversity modulation may be set based on an FTN parameter, such as a variable for adjusting sampling time or a symbol transmission speed. When the diversity order is set based on the FTN parameter, the FTN parameter and the diversity order may be set so as to satisfy a QoS required of the transmission apparatus, such as a transmission rate and a Bit Error Rate. Depending on the circumstances, the set FTN parameter and diversity order may be provided to a reception apparatus that is to receive the output signal.
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公开(公告)号：US20180205578A1
公开(公告)日：2018-07-19
申请号：US15659453
申请日：2017-07-25
Inventor： Sang-Woon KWAK , Joung-Il YUN , Myung-Sun BAEK , Hae-Chan KWON , Young-Su KIM , Hyoung-Soo LIM , Nam-Ho HUR
CPC classification number: H04L25/0228 , H04L1/0047 , H04L1/005 , H04L1/0052 , H04L1/0054 , H04L25/03853
Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
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