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The growing number of remote sensing systems and ship reporting technologies (e.g. Automatic Identification System, Long Range Identification and Tracking, radar tracking, Earth Observation) are generating an overwhelming amount of spatio-temporal and geographically distributed data related to vessels and their movements. Research on reliable data mining techniques has proven essential to the discovery...
The discovery of anomalies and, more in general, of events of interest at sea is one of the main challenges of Maritime Situational Awareness. This paper introduces an event-based methodology for knowledge discovery without querying directly a large volume of raw data. The proposed architecture analyses the maritime traffic data to detect maritime traffic patterns and events and aggregate them in...
The improvement in Maritime Situational Awareness (MSA), or the capability of understanding events, circumstances and activities within and impacting the maritime environment, is nowadays of paramount importance for safety and security. Enhancing coverage of existing technologies such as Automatic Identification System (AIS) provides the possibility to integrate and enrich services and information...
Satellite imagery provides a valuable source of information for maritime surveillance. The vast majority of the research regarding satellite imagery for maritime surveillance focuses on vessel detection and image enhancement, whilst vessel classification remains a largely unexplored research topic. This paper presents a vessel classifier for spaceborne electro-optical imagery based on a feature representative...
Maritime Situational Awareness (MSA) is the capability of understanding events, circumstances and activities within and impacting the maritime environment. Nowadays, the vessel positioning sensors provide a vast amount of data that could enhance the maritime knowledge if analysed and modelled. Vessel positioning data is dynamic and continuous on time and space, requiring spatio-temporal data mining...
Smart Cities rely on the use of ICTs for a more efficient and intelligent use of resources, whilst improving citizens' quality of life and reducing the environmental footprint. As far as the livability of cities is concerned, traffic is one of the most frequent and complex factors directly affecting citizens. Particularly, drivers in search of a vacant parking spot are a non-negligible source of atmospheric...
In this paper, an algorithm is proposed to automatically produce hierarchical graph-based representations of maritime shipping lanes extrapolated from historical vessel positioning data. Each shipping lane is generated based on the detection of the vessel behavioural changes and represented in a compact synthetic route composed of the network nodes and route segments. The outcome of the knowledge...
In a world filled with heightened vandalism and terrorist activities, video surveillance forms an integral part of any incident investigation. While aiming to provide safety and security for the citizens, CCTV cameras are exponentially deployed around metropolitan cities. However, the information thus collected and further processed should comply with the legal and ethical rules defined by the law...
Internet ambitioned as an information platform has encouraged the exponential increase of available multimedia data. Such data volume exceeds the limitations of the existing indexing techniques, generating new challenges to ease and customise information retrieval. New research lines have focused on exploiting human emotions for automatic indexing of multimedia information in an attempt to approach...
In this paper, a low-level multi-feature fusion based classifier is presented for studying the performance of an object retrieval method from surveillance videos. The proposed retrieval framework exploits the recent developments in evolutionary computation algorithm based on biologically inspired optimisation techniques. The multi-descriptor space is formed with a combination of four MPEG-7 visual...
With the recent explosion of surveillance videos, media management has gained an increasing popularity. Addressing this challenge, in this paper, we propose a Surveillance Media Management framework for object detection and classification based on behaviour patterns. The objectives of the paper are: (i) demostrating the discriminative power of behaviour features for object recognition and classification,...
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