Image reconstruction for field-focusing capacitance imaging

Ziqiang Cui, Huaxiang Wang, Zengqiang Chen, Wuqiang Yang

    Research output: Contribution to journalArticlepeer-review


    For online monitoring of multi-phase flows of non-conductive materials, a field-focusing capacitance imaging system has been developed. With a field focusing capacitance sensor, a tomographic image based on capacitance measurements is used directly to map the material distribution. However, it is difficult to achieve a required accuracy for measurement of void fraction from the capacitance image, because of the soft-field effect of the capacitance sensor. In this paper, the forward and inverse problems with a field-focusing capacitance sensor are described. Simulation and experimental results show that deconvolution-based algorithms can reduce the blurring artefact and can reconstruct an image close to the original distribution. © 2011 IOP Publishing Ltd.
    Original languageEnglish
    Article number035501
    JournalMeasurement Science and Technology
    Issue number3
    Publication statusPublished - Mar 2011


    • Deconvolution
    • Field-focusing
    • Image reconstruction


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