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On the Use of Bayesian Networks for Real-Time Urban Traffic Measurements: a Case Study with Low-Cost Devices

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Abstract

This paper describes a low cost computer vision system able to obtain traffic metrics at urban intersections. The proposed system is based on a Bayesian network based reasoning model. It employs the data extracted from background subtraction and contrast analysis techniques applied to predefined regions of interest of the video sequences, to evaluate different traffic metrics. The system has been designed to be able to work with already installed urban cameras, in order to reduce installation costs. So, it can be configured to work with different types of image sizes and video frame rates, as well as to process images taken from different distances and perspectives. The validity of the proposed system has been proved using a Raspberry Pi platform and tested using two real surveillance video cameras managed by the local authority of Cartagena (Spain) during different environmental light conditions. Using this hardware the system is able to process VGA grayscale images at a rate of 8 frames per second.

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Funding

Dirección General de Tráfico (SPIP2017-02230)

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Authors and Affiliations

  1. Dpto. de Electrónica, Tecnología de Computadoras y Proyectos, Universidad Politécnica de Cartagena, Cartagena, Spain

    Ginés Doménech-Asensi

  2. Dpto. de Tecnología de la Información y las Comunicaciones, Universidad Politécnica de Cartagena, Cartagena, Spain

    María-Dolores Cano & Víctor Morales-Esteras

Authors
  1. Ginés Doménech-Asensi
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  2. María-Dolores Cano
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  3. Víctor Morales-Esteras
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Correspondence to Ginés Doménech-Asensi.

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Doménech-Asensi, G., Cano, MD. & Morales-Esteras, V. On the Use of Bayesian Networks for Real-Time Urban Traffic Measurements: a Case Study with Low-Cost Devices. J Sign Process Syst 94, 293–304 (2022). https://doi.org/10.1007/s11265-020-01601-7

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  • DOI: https://doi.org/10.1007/s11265-020-01601-7

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