Bernhard Dieber

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—A visual sensor network (VSN) consists of a large amount of camera nodes which are able to process the captured image data locally and to extract the relevant information. The tight resource limitations in these networks of embedded sensors and processors represent a major challenge for the application development. In this paper we focus on finding optimal(More)
This paper presents a real-time complex event detection concept for resource-limited multimedia sensor networks. A comprehensive solution based on Answer Set Programming (ASP) is developed. We show that ASP is an appropriate solution to detect a large number of simple and complex events (video-audio understanding) on platforms with limited resources e.g.(More)
—Smart camera networks usually have limited resources. This includes not only processing power and memory but in many applications also the amount of available energy. To find a trade-off between available resources and the current requirements of the application, the configuration of the network is very important. Due to rapid changes in the visual sensor(More)
A recent trend in smart camera networks is that they are able to modify the functionality during runtime to better reflect changes in the observed scenes and in the specified monitoring tasks. In this paper we focus on different configuration methods for such networks. A configuration is given by three components: (i) a description of the camera nodes, (ii)(More)
This paper presents a smart resource-aware multimedia sensor network. We illustrate a surveillance system which supports human operators, by automatically detecting the complex events and giving the possibility to recall the detected events and searching them in an intelligent search engine. Four subsystems have been implemented, the tracking and detection(More)
—A visual sensor network (VSN) consists of resource-limited camera nodes which process the captured image data locally and collaborate with other cameras over a wireless network. The configuration of the network is a very important task in VSNs in order to adapt the available resources to the current requirements of the application. We focus on coverage and(More)
—Despite significant interest in the research community , the development of multi-camera applications is still quite challenging. This paper presents Ella-a dedicated pub-lish/subscribe middleware system that facilitates distribution, component reuse and communication for heterogeneous multi-camera applications. We present the key components of this(More)
—The current trend towards more mobility will increasingly affect the gaming market over the next years. Location-based mobile massive multiplayer online games (MMMOG) will be a new paradigm in the gaming industry. Since building a game for a massive amount of mobile players is a challenging task, we have created a reusable architecture for location-aware(More)