4 research outputs found

    The impact of video transcoding parameters on event detection for surveillance systems

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    The process of transcoding videos apart from being computationally intensive, can also be a rather complex procedure. The complexity refers to the choice of appropriate parameters for the transcoding engine, with the aim of decreasing video sizes, transcoding times and network bandwidth without degrading video quality beyond some threshold that event detectors lose their accuracy. This paper explains the need for transcoding, and then studies different video quality metrics. Commonly used algorithms for motion and person detection are briefly described, with emphasis in investigating the optimum transcoding configuration parameters. The analysis of the experimental results reveals that the existing video quality metrics are not suitable for automated systems, and that the detection of persons is affected by the reduction of bit rate and resolution, while motion detection is more sensitive to frame rate

    Deployment of virtual network functions over multiple WAN interconnected PoPs

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    Network Functions Virtualization allows Communication Service Providers to extend their traditional service portfolio to new models of service offerings, such as Virtualized Network Functions as a Service (VNFaaS), in which network functions can be traded following the “on-demand” Cloud paradigm. Incremental deployment and interoperability with legacy infrastructure, in particular Wide Area Network (WAN) domains and enterprise services, are key requirements to make this vision come true in the short/medium term. This paper discusses the main challenges that need be addressed for the adoption of VNFaaS in production environments and is particularly focused on the integration of NFV and WAN. To this end, two components are proposed: Netfloc, to support traffic steering inside NFV infrastructure points of presence, and the WAN Infrastructure Connectivity Manager (WICM), to handle the integration of virtualized network functions with WAN connectivity services, as a composed end-to-end network service

    Deliverable 6.2: Trials and experimentation (cycle 2)

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    This deliverable presents the second cycle of trials and experimentation activities executed over 5GENESIS facilities. The document is the continuation of deliverable D6.1, in the sense that it captures tests carried out over the evolved infrastructures hosting 5GENESIS facilities following the methodology defined in D6.1. In this document 8 main KPIs and 4 application specific validation trials achieved, under 123 experiments that performed in total. The tests focus more on i) the evolved 5G infrastructure deployments that includes radio and core elements in non-standalone (NSA) deployment configurations based on commercial and open implementations, and ii) the use of Open 5GENESIS Suite for the execution of the tests.5GENESI
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