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公开(公告)号：US11562600B2
公开(公告)日：2023-01-24
申请号：US17215134
申请日：2021-03-29
发明人： Liran Orevi , Mark Vexler , Yaacov Hoch
摘要： Disclosed herein are methods and systems for determining liveness of a user, comprising analyzing visual content of a screen of a client device used by a user to access an online service, adjusting one or more visual objects displayed on the screen of the client device according to dynamically changing patterns, capturing a sequence of images depicting one or more reflecting surfaces associated with the user viewing the screen while the visual objects are displayed, analyzing the images to identify a reflection of the displayed visual objects in the reflecting surfaces and verifying liveness of the user based on one or more of a plurality of reflection attributes of the identified reflection.
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公开(公告)号：US11715330B2
公开(公告)日：2023-08-01
申请号：US17136053
申请日：2020-12-29
发明人： Mark Vexler , Liran Orevi , Yaacov Hoch , Tsvi Lev
CPC分类号： G06V40/176 , G06N20/00 , G06V10/60 , G06V10/82 , G06V20/46 , G06V40/171 , G06V40/172 , G06V40/45
摘要： Disclosed herein are methods and systems for determining whether a user engaged in an interactive video session is a genuine user or a potential impersonator by analyzing a plurality of consecutive images depicting the user while engaged in the video session to identify one or more dynamic facial patterns in the face of the user while his lips are moving. Each such dynamic facial pattern may express a movement of one or more of a plurality of wrinkles and/or other dynamic facial features (e.g., nostrils, distance between nostrils, ear, skin portion, muscle, etc.) in the face of the user. The user may be then determined to be genuine or not based on a comparison between the identified dynamic facial pattern(s) and one or more reference dynamic facial patterns.
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公开(公告)号：US11763604B2
公开(公告)日：2023-09-19
申请号：US18097306
申请日：2023-01-16
发明人： Liran Orevi , Mark Vexler , Yaacov Hoch
CPC分类号： G06V40/45 , G06V40/193
摘要： Disclosed herein are methods and systems for determining liveness of a user, comprising analyzing visual content of a screen of a client device used by a user to access an online service, adjusting one or more visual objects displayed on the screen of the client device according to dynamically changing patterns, capturing a sequence of images depicting one or more reflecting surfaces associated with the user viewing the screen while the visual objects are displayed, analyzing the images to identify a reflection of the displayed visual objects in the reflecting surfaces and verifying liveness of the user based on one or more of a plurality of reflection attributes of the identified reflection.
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公开(公告)号：US11129042B2
公开(公告)日：2021-09-21
申请号：US16571215
申请日：2019-09-16
发明人： Tsvi Lev , Yaacov Hoch , Liran Orevi , Mark Vexler
IPC分类号： H04W24/10 , H04W24/08 , H04W56/00 , H04W40/20 , G08B21/02 , G01S5/00 , H04W24/06 , G08B13/181 , G01S13/04
摘要： Presented herein are systems and methods for detecting a boundary line crossing based on Round Trip Time (RTT) measured for wireless signals transmitted between and initiator wireless transceiver and a responder wireless transceiver deployed to form a straight boundary line. The initiator wireless transceiver transmits wireless probe signal(s) to the responder wireless transceiver, receives a wireless response signal transmitted by the responder wireless transceiver in response to the wireless probe signal(s), calculates an RTT combining a travel time of the wireless probe signal(s) and the travel time of the wireless response signal(s), compares the RTT to a reference RTT computed for a wireless probe signal and a corresponding wireless response signal transmitted in a clear straight transmission path while the boundary line is clear of obstacles and determines whether an object is blocking the straight transmission path based on a deviation of the RTT from the reference RTT.
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