Dimitris Makris

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We report an investigation to determine the topology of an arbitrary network of video cameras observing an environment. The topology is learnt in an unsupervised manner by temporal correlation of objects transiting between adjacent camera viewfields. We extract this information in two steps, firstly identifying the principal entry and exit zones associated(More)
This paper describes a system for visual surveillance for outdoor environments using an intelligent multi camera network. Each intelligent camera uses robust techniques for detecting and tracking moving objects. The system architecture implemented supports the real time capture and storage of object track information into a surveillance database. The(More)
In this paper, we focus on the bootstrap operation of a publish/subscribe information centric network. We consider a set of interconnected network nodes and describe how they organize themselves into a fully functional network by publishing and subscribing to control plane information. Network bootstrap includes establishing point-to-point communication(More)
The so-called " TV White Spaces " (TVWS) are locally underutilized portions of the terrestrial TV bands and occur as a by-product of the Digital Switchover taking place in most countries across the globe. Thanks to the very good characteristics of the TV bands in terrestrial radio communications, the exploitation of TVWS for local-or regional-area wireless(More)
This paper addresses the applicability and interoperation of standards and emerging technologies for the operation and management of ATM networks. The issue is tackled from a practical perspective based on experiences gained through the design, realisation and experimentation of a system developed by the ACTS AC208 REFORM project. Assuming an ATM-based(More)
—In this paper, we focus on the bootstrap operation of a publish/subscribe information centric network. We consider a set of interconnected network nodes and describe how they organize themselves into a fully functional network by publishing and subscribing to control plane information. Network bootstrap includes establishing point-to-point communication(More)
Future Internet network management systems are expected to incorporate self-x capabilities in order to tackle the increased management needs that cannot be addressed through human intervention. Towards this end, Self-NET developed a self-management framework based on the introduction of cognitive capabilities in network elements. In this paper, the(More)
Motion detection is a fundamental processing step in the majority of visual surveillance algorithms. While an increasing number of authors are beginning to perform quantitative comparison of their algorithms, most do not address the complexity and range of the issues which underpin the design of good evaluation methodology. In this paper we explore the(More)
Nowadays, users are reachable through a number of telecommunication devices, network operators, as well as services and applications. The calling users if provided with the appropriate information can manually select the most suitable way of communication. Although this capability already affects existing business models, the lack of a transparent and a(More)
Red grape pomace (RGP) and onion solid wastes (OSW) were used as raw material to produce flavonoid-enriched extracts, using ultrasound-assisted solid-liquid extraction. The extraction medium used was composed of water and glycerol and under the conditions used the extraction of flavonoids from both materials was shown to obey first-order kinetics. Maximum(More)