# Decay behavior and optical parameter identification for spatial-frequency domain imaging by the radiative transport equation.

@article{Machida2020DecayBA, title={Decay behavior and optical parameter identification for spatial-frequency domain imaging by the radiative transport equation.}, author={Manabu Machida and Yoko Hoshi and Keiichiro Kagawa and Kazuki Takada}, journal={Journal of the Optical Society of America. A, Optics, image science, and vision}, year={2020}, volume={37 12}, pages={ 2020-2031 } }

The decay behavior of specific intensity is studied for spatial-frequency domain imaging (SFDI). It is shown using the radiative transport equation that the decay is given by a superposition of different decay modes, and the decay rates of these modes are determined by spatial frequencies and Case's eigenvalues. This explains why SFDI can focus on shallow regions. The fact that light with nonzero spatial frequency rapidly decays makes it possible to exclusively extract optical properties of the… Expand

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