Anisotropic optical path model for characterizing statistics of scattered field

A model that captures the statistical properties of the scattered light field can offer a physical explanation and computational support for designing and evaluating imaging schemes. Here, we propose an Anisotropic Optical Path (AOP) model that incorporates statistics of different optical paths affected by scattering, with photons involved in different processes. The model enables simulation of a limited field of view (FOV) constrained by the memory effect. It also reflects spectral differences under broadband illumination, thereby enhancing its applicability for light field simulation in higher degrees of freedom. Due to the decorrelation trend of speckle patterns at different wavelengths, the model verifies the feasibility of using scattering media as spectral filters.