This paper presents a novel scheme to fuse one-dimensional multi-frequency eddy current signals by using multiresolution discrete wavelet analysis method. This technique consists of three steps. First, raw signals are preprocessed and decomposed into approximations and details at different resolution levels. The discrete wavelet transform is adopted at this stage. Then, several fusion processes are implemented in the coefficients domain. Finally, the inverse discrete wavelet transform is achieved to get the fusion result. In this technique, we develop a new mask-signal-modulated fusion algorithm to fuse in coefficients domain. It is performed and compared with other fusion methods based on the criteria of signal-to-noise ratio of the fused result. From our experiments, it demonstrates a better performance and shows a promising application on the two-dimensional multi-frequency eddy current signals.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fusion of multi-frequency eddy current signals-by using wavelet analysis method


    Contributors:
    Lingqi Li, (author) / Tsukada, K. (author) / Hanasaki, K. (author) / Zheng Liu, (author)


    Publication date :

    2002-01-01


    Size :

    409041 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Fusion of Multi-Frequency Eddy Current Signals by Using Wavelet Analysis

    Li, L. / Tsukada, K. / Hanasaki, K. et al. | British Library Conference Proceedings | 2002


    Data fusion method for the optimal mixing of multi-frequency eddy current signals

    Liu, Z. / Safizadeh, M.S. / Forsyth, D.S. et al. | Tema Archive | 2003


    Time-frequency analysis of pulsed eddy current signals

    Safizadeh, M.S. / Lepine, B.A. / Forsyth, D.S. et al. | Tema Archive | 2001


    Neural Network Processing of Low Frequency Eddy Current Signals for Crack Detection

    Hazen, D. J. / International Committee on Aeronautical Fatigue | British Library Conference Proceedings | 1993