Validity conditions for the radiative transfer equation.

@article{MartLpez2003ValidityCF,
  title={Validity conditions for the radiative transfer equation.},
  author={Luis Martı́-L{\'o}pez and Jorge Bouza-Domínguez and Jeremy C. Hebden and Simon Robert Arridge and R. A. Martinez-Celorio},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2003},
  volume={20 11},
  pages={
          2046-56
        }
}
We compare the radiative transfer equation for media with constant refractive index with the radiative transfer equation for media with spatially varying refractive indices [J. Opt. A Pure App. Opt. 1, L1 (1999)] and obtain approximate conditions under which the former equation is accurate for modeling light propagation in scattering media with spatially varying refractive indices. These conditions impose restrictions on the variations of the refractive index, the gradient of the refractive… Expand

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