Privacy-Preserving Video Anomaly Detection: A Survey

• URL: http://arxiv.org/abs/2411.14565v1
• Date: Thu, 21 Nov 2024 20:29:59 GMT
• Title: Privacy-Preserving Video Anomaly Detection: A Survey
• Authors: Jing Liu, Yang Liu, Xiaoguang Zhu,
• Abstract summary: Video Anomaly Detection (VAD) aims to automatically analyze patterns in surveillance videos collected from open spaces to detect anomalous events that may cause harm without physical contact. The lack of transparency in video transmission and usage raises public concerns about privacy and ethics limiting the real-world application of VAD. Recently, researchers have focused on privacy concerns in VAD by conducting systematic studies from various perspectives including data, features, and systems. This article systematically reviews progress in P2VAD for the first time, defining its scope and providing an intuitive taxonomy.
• Score: 10.899433437231139
• License:
• Abstract: Video Anomaly Detection (VAD) aims to automatically analyze spatiotemporal patterns in surveillance videos collected from open spaces to detect anomalous events that may cause harm without physical contact. However, vision-based surveillance systems such as closed-circuit television often capture personally identifiable information. The lack of transparency and interpretability in video transmission and usage raises public concerns about privacy and ethics, limiting the real-world application of VAD. Recently, researchers have focused on privacy concerns in VAD by conducting systematic studies from various perspectives including data, features, and systems, making Privacy-Preserving Video Anomaly Detection (P2VAD) a hotspot in the AI community. However, current research in P2VAD is fragmented, and prior reviews have mostly focused on methods using RGB sequences, overlooking privacy leakage and appearance bias considerations. To address this gap, this article systematically reviews the progress of P2VAD for the first time, defining its scope and providing an intuitive taxonomy. We outline the basic assumptions, learning frameworks, and optimization objectives of various approaches, analyzing their strengths, weaknesses, and potential correlations. Additionally, we provide open access to research resources such as benchmark datasets and available code. Finally, we discuss key challenges and future opportunities from the perspectives of AI development and P2VAD deployment, aiming to guide future work in the field.

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