Imaging through multilayer scattering media based on light diffusion Green's function

The scattering effect of random media such as clouds, turbid water, and biological tissue severely restricts the imaging and ranging capabilities of optical detection and ranging systems through media. The method of using light diffusion Green's function has gradually become the mainstream method for imaging through scattering media. The Green's function for a single-layer scattering media can be easily derived using the diffusion equation. However, in practical applications, scattering media typically consist of multiple layers with different optical properties, which complicates both the light propagation process and imaging through scattering media. In this paper, we derive the Green's function for multi-layer scattering media by solving the diffusion equation and apply it to simulation experiments of imaging through such media. The results demonstrate that, even in complex scenarios where the scattering media exhibits varying scattering characteristics and refractive indices, our proposed method is still capable of effective imaging. Our proposed imaging method may have potential applications in fields such as medical imaging, underwater imaging, and autonomous driving.