Abstract

The controlled Monte Carlo method is generalized to model photon migration in turbid media of arbitrary geometries. Its implementation for the reflection geometry is exemplified in this paper. The most probable diffuse direction of light is used as the local attractive vector that serves as the basis of biased sampling of scattering angles. Consequently, path-length resolved photon trajectories can be generated with a significantly improved efficiency. We report a more than 29 times reduction in simulation time for early arriving photons in a typical configuration.

© 2007 Optical Society of America

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