Evaluation of effect of number of electrodes in ERT sensors on image quality

Jiamin Ye, Haigang Wang, Wuqiang Yang

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    Abstract

    It is assumed that the spatial resolution of the reconstructed images with an electrical resistance tomography (ERT) system can be improved by increasing the number of measurement electrodes. In this paper, the issues with the number of electrodes will be discussed. To analyze the effect of the number of electrodes on the quality of reconstructed images, ERT sensors with different number of electrodes - 8, 12, 16, 20, 24, 32, 36, 40 and 48 - are investigated. With the adjacent and opposite strategies, the voltages between different electrode pairs are calculated for some typical conductivity distributions with different contrast in conductivity using a finite element method. The obtained voltage data are then used to reconstruct images using the projected Landweber iteration algorithm. In the meanwhile, the impact of meshes in the inverse problem solver on image quality is also discussed. The sensitivity distributions for all cases are analyzed utilizing singular value decomposition (SVD). The analytical results are in agreement with the simulation results. © 2013 IEEE.
    Original languageEnglish
    Title of host publicationIST 2013 - 2013 IEEE International Conference on Imaging Systems and Techniques, Proceedings|IST - IEEE Int. Conf. Imaging Syst. Tech., Proc.
    Place of PublicationUSA
    PublisherIEEE
    Pages19-24
    Number of pages5
    ISBN (Print)9781467357906
    DOIs
    Publication statusPublished - 2013
    Event2013 IEEE International Conference on Imaging Systems and Techniques, IST 2013 - Beijing
    Duration: 1 Jul 2013 → …

    Conference

    Conference2013 IEEE International Conference on Imaging Systems and Techniques, IST 2013
    CityBeijing
    Period1/07/13 → …

    Keywords

    • electrical resistance tomography
    • image reconstruction
    • resistance sensor

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