Security-Preserving Live 3D Video Surveillance

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3D video surveillance has become the new trend in security monitoring with the popularity of 3D depth cameras in the consumer market. While enabling more fruitful surveillance features, the finer-grained 3D videos being captured would raise new security concerns that have not been addressed by existing research. This paper explores the security implications of live 3D surveillance videos in triggering biometrics-related attacks, such as face ID spoofing. We demonstrate that the state-of-the-art face authentication systems can be effectively compromised by the 3D face models presented in the surveillance video. Then, to defend against such face spoofing attacks, we propose to proactively and benignly inject adversarial perturbations to the surveillance video in real time, prior to the exposure to potential adversaries. Such dynamically generated perturbations can prevent the face models from being exploited to bypass deep learning-based face authentications while maintaining the required quality and functionality of the 3D video surveillance. We evaluate the proposed perturbation generation approach on both an RGB-D dataset and a 3D video dataset, which justifies its effective security protection, low quality degradation, and real-time performance.