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公开(公告)号：US11908117B2
公开(公告)日：2024-02-20
申请号：US17227704
申请日：2021-04-12
发明人： Hao Feng , Jae-Joon Han , Changkyu Choi , Chao Zhang , Jingtao Xu , Yanhu Shan , Yaozu An
IPC分类号： G06T7/00 , G06T7/73 , G06V10/20 , G06V10/98 , G06V40/16 , G06F18/214 , G06V10/774 , G06V10/46
CPC分类号： G06T7/0002 , G06F18/2148 , G06T3/4007 , G06T7/73 , G06V10/255 , G06V10/7747 , G06V10/993 , G06V40/171 , G06T2207/30168 , G06V10/467
摘要： An image processing method implemented by a processor includes receiving an image, acquiring a target image that includes an object from the image, calculating an evaluation score by evaluating a quality of the target image, and detecting the object from the target image based on the evaluation score.
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公开(公告)号：US11138455B2
公开(公告)日：2021-10-05
申请号：US16861497
申请日：2020-04-29
发明人： Jingtao Xu , ByungIn Yoo , Jae-Joon Han , Chao Zhang , Hao Feng , Yanhu Shan , Yaozu An , Changkyu Choi
IPC分类号： G06K9/00
摘要： Disclosed is a liveness test method and apparatus. A liveness test apparatus determines a pre-liveness score based on a plurality of sub-images acquired from an input image, determines a post-liveness score based on a recognition model for recognizing an object included in the input image, and determines a liveness of the object based on any one or any combination of the pre-liveness score and the post-liveness score.
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公开(公告)号：US10528714B2
公开(公告)日：2020-01-07
申请号：US15867147
申请日：2018-01-10
发明人： Chao Zhang , Haixiao Liu , Yang Liu , Chisung Bae , Sang Joon Kim
IPC分类号： G05B19/00 , G05B23/00 , G06F7/00 , G06F7/04 , G08B29/00 , G08C19/00 , H04B1/00 , H04B3/00 , H04Q9/00 , G06F21/32 , A61B5/0452 , A61B5/00 , G06K9/00 , A61B5/117 , A61B5/04
摘要： A method and apparatus to authenticate a registered user are described. The method and apparatus include a processor configured to identify a first electrocardiogram (ECG) signal measured from the user, and determine a similarity between the first ECG signal and a second ECG signal based on the identified first ECG signal and the second ECG signal included in a reference ECG signal set. The processor is also configured to determine an authentication threshold corresponding to the reference ECG signal set, and determine whether to authenticate the first ECG signal measured from the user by comparing the determined similarity and the authentication threshold.
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公开(公告)号：US10089451B2
公开(公告)日：2018-10-02
申请号：US15041477
申请日：2016-02-11
发明人： Xuetao Feng , Chao Zhang , Chisung Bae , Jongae Park , Sang-joon Kim , Yang Liu
IPC分类号： G06F21/00 , G06F21/32 , A61B5/0452 , H04L9/32 , A61B5/00 , A61B5/117 , H04L29/06 , G06K9/00 , G06K9/62 , G16H50/20
摘要： Provided are electrocardiogram (ECG)-based authentication and training. An authentication method includes generating a feature vector of an ECG obtained from an entity or a person based on a dictionary, classifying the ECG through a classifier based on the feature vector, and performing authentication based on a classification result.
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公开(公告)号：US11900610B2
公开(公告)日：2024-02-13
申请号：US18126042
申请日：2023-03-24
发明人： Yueying Kao , Yang Liu , Hao Wang , Sunghoon Hong , Wooshik Kim , Chao Zhang , Lin Ma , Qiang Wang , Weiming Li
IPC分类号： G06T7/11 , G06T7/149 , G06T15/00 , G06T7/168 , G06V10/25 , G06V10/764 , G06V10/44 , G06V20/64
CPC分类号： G06T7/11 , G06T7/149 , G06T7/168 , G06T15/00 , G06V10/25 , G06V10/454 , G06V10/764 , G06V20/64 , G06T2200/04 , G06T2200/08 , G06T2207/10016 , G06T2207/10024 , G06T2207/10028 , G06T2207/20108 , G06T2215/08
摘要： An image processing apparatus and method are provided. The image processing apparatus acquires a target image including a depth image of a scene, determines three-dimensional (3D) point cloud data corresponding to the depth image based on the depth image, and extracts an object included in the scene to acquire an object extraction result based on the 3D point cloud data.
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公开(公告)号：US11721131B2
公开(公告)日：2023-08-08
申请号：US17468995
申请日：2021-09-08
发明人： Byungin Yoo , Jingtao Xu , Chao Zhang , Hao Feng , Yanhu Shan , Youngjun Kwak , Youngsung Kim , Wonsuk Chang , Jaejoon Han
CPC分类号： G06V40/45 , G06V40/161 , G06V40/169 , G06V40/172
摘要： A liveness test method and apparatus is disclosed. The liveness test method includes detecting a face region in an input image for a test target, implementing a first liveness test to determine a first liveness value based on a first image corresponding to the detected face region, implementing a second liveness test to determine a second liveness value based on a second image corresponding to a partial face region of the detected face region, implementing a third liveness test to determine a third liveness value based on an entirety of the input image or a full region of the input image that includes the detected face region and a region beyond the detected face region, and determining a result of the liveness test based on the first liveness value, the second liveness value, and the third liveness value.
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公开(公告)号：US11645756B2
公开(公告)日：2023-05-09
申请号：US17095784
申请日：2020-11-12
发明人： Yueying Kao , Yang Liu , Hao Wang , Sunghoon Hong , Wooshik Kim , Chao Zhang , Lin Ma , Qiang Wang , Weiming Li
CPC分类号： G06T7/149 , G06T7/11 , G06T7/168 , G06T15/00 , G06T2200/04 , G06T2200/08 , G06T2207/10016 , G06T2207/10024 , G06T2207/10028 , G06T2207/20108 , G06T2215/08
摘要： An image processing apparatus and method are provided. The image processing apparatus acquires a target image including a depth image of a scene, determines three-dimensional (3D) point cloud data corresponding to the depth image based on the depth image, and extracts an object included in the scene to acquire an object extraction result based on the 3D point cloud data.
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公开(公告)号：US10977509B2
公开(公告)日：2021-04-13
申请号：US15926161
申请日：2018-03-20
发明人： Hao Feng , Jae-Joon Han , Changkyu Choi , Chao Zhang , Jingtao Xu , Yanhu Shan , Yaozu An
摘要： An image processing method implemented by a processor includes receiving an image, acquiring a target image that includes an object from the image, calculating an evaluation score by evaluating a quality of the target image, and detecting the object from the target image based on the evaluation score.
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公开(公告)号：US10154818B2
公开(公告)日：2018-12-18
申请号：US14884004
申请日：2015-10-15
发明人： Chao Zhang , Xuetao Feng , Yang Liu , Chisung Bae , Sang-joon Kim
IPC分类号： A61B5/0205 , A61B5/00 , A61B5/117 , G07C9/00
摘要： A biometric authentication apparatus and method are provided. The biometric authentication apparatus may obtain at least two types of biosignals, extract a same type of physiological features from each of the biosignals, and determine whether the biosignals are generated from a same living body based on the extracted same type of physiological features.
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公开(公告)号：US10130307B2
公开(公告)日：2018-11-20
申请号：US15371454
申请日：2016-12-07
发明人： Yang Liu , Xuetao Feng , Chao Zhang , Chisung Bae , Sang-joon Kim
IPC分类号： A61B5/04 , A61B5/00 , A61B5/044 , A61B5/0452 , A61B5/117
摘要： Disclosed are an electrocardiogram (ECG) authentication method and apparatus, and a training method and apparatus for training a neural network model used for ECG authentication, the ECG authentication apparatus being configured to acquire an ECG signal of a subject, extract a semantic feature of the ECG signal, and authenticate the subject based on the extracted semantic feature.
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