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Publications (2)0 Total impact

  • Zhi-Fang Li, Hui Li
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    ABSTRACT: An analytical theory integrating the Rayleigh-Debye-Gans theory with fractal aggregate theory (RDG-FA) for a better understanding of the optical properties of fractal-like tissue at a high-resolution scale is present. The calculated optical properties of tissue are consistent with the reported values. And the optical properties are related to the fractal dimension and the correlation length. In addition, the exponents of the inverse power law spectral dependence of scattering coefficient and reduced scattering coefficient are piecewise linearly depending on the fractal dimension, indicating that the exponents can serve as a tools for distinguishing the different tissue.
    Proc SPIE 06/2011;
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    ABSTRACT: A method based on morphological granulometric analysis for the speckle image is presented to estimate the scattering coefficient of the scattering media. It is experimentally demonstrated that the average granulometric size, derived from the successive opening operations, is approximately in inverse proportion to the scattering coefficient of the sample in a broad illumination. Furthermore, a theoretical model based on the spatial correlation function of the back scattered intensity for the experimental phenomenon is reported. The analysis demonstrates that the explicit theoretical relationship between average granulometric size of speckle and scattering coefficient is established, and the theoretical prediction is consistent with the experimental result.
    Optoelectronics Letters 01/2010; 6(5):376-379.