Privacy-Respecting Smart Video Surveillance Based on Usage Control Enforcement
The number of video surveillance deployments in publicly accessible spaces is continuously increasing. At the same time, the call for technical assistance of human operators in terms of so-called smart video surveillance system has been growing ever louder and is addressed by research and development. With such systems, video analysis algorithms for activity recognition, tracking, and biometric identification of persons become reality. While aiming to improve the effectiveness and the
... s and the efficiency of video surveillance, these developments coincidentally increase the diversity and intensity of intrusions into observed individuals privacy and the potential for misuse. Legal scholars agree that applicable data protection laws cannot sufficiently cover the technological evolution of smart video surveillance and demand further regulations. In this sense they expect that a lawful operation of smart video surveillance will require effective mechanisms for protecting privacy and preventing misuse. This research introduces a conceptual framework for lawful and privacyrespecting smart video surveillance, which enforces privacy-related constraints based on the current threat situation and the type of incident that has been detected. It thus constitutes the first approach towards situation-dependent smart video surveillance as opposed to adjusting the privacy level of disclosed data exclusively to the authorization levels of observers. This framework also increases the selectivity of smart video surveillance in terms of restricting data processing to individuals associated to an incident under investigation and in terms of data disclosure by means of enforcing privacy privileges for authenticated individuals or groups. Constraints are enforced by means of usage control technology, which is instantiated for video surveillance systems for the first time. Based on the proposed generic smart video surveillance architecture extended with usage control enforcement capabilities, smart video ii Abstract Zusammenspiel mit verteilter Nutzungskontrolle können bereitgestellte Videodaten auch auf den mobilen Endgeräten von Einsatzkräften vor unrechtmäßiger Nutzung, bspw. Speicherung oder Weiterverbreitung, geschützt werden.