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World, Americas, Special Report

Posted: 16 Jun 2022 03:30
by Aprpdltub
The pervasive coexistence of surveillance cameras and Wi-Fi devices offers the opportunity to thwart video forgery attacks in a real-time and fine-grained manner. In such areas, not only visible light but also Wi-Fi signals interact with involving human objects, because human bodies act as reflectors in the Wi-Fi frequency range. In this condition, camera and Wi-Fi signals convey the common human semantic information. If forgery attacks are launched on camera signals, such cross-modal information correspondence will be decoupled, which can be exploited for timely forgery detection and accurate forgery localization. Toward this end, we present Secure-Pose, a novel cross-modal system that effectively detects and localizes forgery traces in live surveillance videos using coexisting Wi-Fi signals. Our key insight is that channel state information (CSI) measurements also convey human semantic features. Video forgery attacks will mismatch them with those of video streams. Thus, Secure-Pose can exploit CSI measurements for forgery detection and localization on suspicious live video streams.




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Re: World, Americas, Special Report

Posted: 06 Feb 2023 22:28
by wangiskahn2