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Modeling and Verification of a Heterogeneous Sky Surveillance Visual Sensor Network
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.ORCID-id: 0000-0002-6484-9260
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.ORCID-id: 0000-0003-1923-3843
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.ORCID-id: 0000-0002-3429-273X
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2013 (Engelska)Ingår i: International Journal of Distributed Sensor Networks, ISSN 1550-1329, E-ISSN 1550-1477, s. Art. id. 490489-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A visual sensor network (VSN) is a distributed system of a large number of camera nodes and has useful applications in many areas. The primary difference between a VSN and an ordinary scalar sensor network is the nature and volume of the information. In contrast to scalar sensor networks, a VSN generates two-dimensional data in the form of images. In this paper, we design a heterogeneous VSN to reduce the implementation cost required for the surveillance of a given area between two altitude limits. The VSN is designed by combining three sub-VSNs, which results in a heterogeneous VSN. Measurements are performed to verify full coverage and minimum achieved object image resolution at the lower and higher altitudes, respectively, for each sub-VSN. Verification of the sub-VSNs also verifies the full coverage of the heterogeneous VSN, between the given altitudes limits. Results show that the heterogeneous VSN is very effective to decrease the implementation cost required for the coverage of a given area. More than 70% decrease in cost is achieved by using a heterogeneous VSN to cover a given area, in comparison to homogeneous VSN. © 2013 Naeem Ahmad et al.

Ort, förlag, år, upplaga, sidor
2013. s. Art. id. 490489-
Nationell ämneskategori
Inbäddad systemteknik
Identifikatorer
URN: urn:nbn:se:miun:diva-17121DOI: 10.1155/2013/490489ISI: 000324191600001Scopus ID: 2-s2.0-84884237155Lokalt ID: STCOAI: oai:DiVA.org:miun-17121DiVA, id: diva2:558153
Tillgänglig från: 2012-10-02 Skapad: 2012-10-02 Senast uppdaterad: 2017-12-07Bibliografiskt granskad
Ingår i avhandling
1. Modelling and optimization of sky surveillance visual sensor network
Öppna denna publikation i ny flik eller fönster >>Modelling and optimization of sky surveillance visual sensor network
2012 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

A Visual Sensor Network (VSN) is a distributed system of a largenumber of camera sensor nodes. The main components of a camera sensornode are image sensor, embedded processor, wireless transceiver and energysupply. The major difference between a VSN and an ordinary sensor networkis that a VSN generates two dimensional data in the form of an image, whichcan be exploited in many useful applications. Some of the potentialapplication examples of VSNs include environment monitoring, surveillance,structural monitoring, traffic monitoring, and industrial automation.However, the VSNs also raise new challenges. They generate large amount ofdata which require higher processing powers, large bandwidth requirementsand more energy resources but the main constraint is that the VSN nodes arelimited in these resources.This research focuses on the development of a VSN model to track thelarge birds such as Golden Eagle in the sky. The model explores a number ofcamera sensors along with optics such as lens of suitable focal length whichensures a minimum required resolution of a bird, flying at the highestaltitude. The combination of a camera sensor and a lens formulate amonitoring node. The camera node model is used to optimize the placementof the nodes for full coverage of a given area above a required lower altitude.The model also presents the solution to minimize the cost (number of sensornodes) to fully cover a given area between the two required extremes, higherand lower altitudes, in terms of camera sensor, lens focal length, camera nodeplacement and actual number of nodes for sky surveillance.The area covered by a VSN can be increased by increasing the highermonitoring altitude and/or decreasing the lower monitoring altitude.However, it also increases the cost of the VSN. The desirable objective is toincrease the covered area but decrease the cost. This objective is achieved byusing optimization techniques to design a heterogeneous VSN. The core ideais to divide a given monitoring range of altitudes into a number of sub-rangesof altitudes. The sub-ranges of monitoring altitudes are covered by individualsub VSNs, the VSN1 covers the lower sub-range of altitudes, the VSN2 coversthe next higher sub-range of altitudes and so on, such that a minimum cost isused to monitor a given area.To verify the concepts, developed to design the VSN model, and theoptimization techniques to decrease the VSN cost, the measurements areperformed with actual cameras and optics. The laptop machines are used withthe camera nodes as data storage and analysis platforms. The area coverage ismeasured at the desired lower altitude limits of homogeneous as well asheterogeneous VSNs and verified for 100% coverage. Similarly, the minimumresolution is measured at the desired higher altitude limits of homogeneous aswell as heterogeneous VSNs to ensure that the models are able to track thebird at these highest altitudes.

Ort, förlag, år, upplaga, sidor
Sundsvall: Mid Sweden University, 2012
Serie
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 86
Nationell ämneskategori
Inbäddad systemteknik
Identifikatorer
urn:nbn:se:miun:diva-17123 (URN)STC (Lokalt ID)978-91-87103-25-4 (ISBN)STC (Arkivnummer)STC (OAI)
Handledare
Tillgänglig från: 2012-10-02 Skapad: 2012-10-02 Senast uppdaterad: 2016-10-20Bibliografiskt granskad
2. Modelling, optimization and design of visual sensor networks for sky surveillance
Öppna denna publikation i ny flik eller fönster >>Modelling, optimization and design of visual sensor networks for sky surveillance
2013 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Ort, förlag, år, upplaga, sidor
Sundsvall: Mid Sweden University, 2013. s. 210
Serie
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 166
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
urn:nbn:se:miun:diva-21022 (URN)978-91-87557-11-8 (ISBN)
Handledare
Tillgänglig från: 2014-01-13 Skapad: 2014-01-13 Senast uppdaterad: 2014-04-24Bibliografiskt granskad

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