title: Modeling the propagation of light in realistic tissue structures with MMC-fpf: a meshed Monte Carlo method with free phase function.
abstract: Monte Carlo methods commonly used in tissue optics are limited to a layered tissue geometry and thus provide only a very rough approximation for many complex media such as biological structures. To overcome these limitations, a Meshed Monte Carlo method with flexible phase function choice (fpf-MC) has been developed to function in a mesh. This algorithm can model the light propagation in any complexly shaped structure, by attributing optical properties to the different mesh elements. Furthermore, this code allows the use of different discretized phase functions for each tissue type, which can be simulated from the microstructural properties of the tissue, in combination with a tool for simulating the bulk optical properties of polydisperse suspensions. As a result, the scattering properties of tissues can be estimated from information on the microstructural properties of the tissue. This is important for the estimation of the bulk optical properties that can be used for the light propagation model, since many types of tissue have never been characterized in literature. The combination of these contributions, made it possible to use the MMC-fpf for modeling the light porapagation in plant tissue. The developed Meshed Monte Carlo code with flexible phase function choice (MMC-fpf) was successfully validated in simulation through comparison with the Monte Carlo code in Multi-Layered tissues (R2 > 0.9999) and experimentally by comparing the measured and simulated reflectance (RMSE = 0.015%) and transmittance (RMSE = 0.0815%) values for tomato leaves.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Watté
authors.forename: Ben
authors.initials: B
authors.lastname: Aernouts
authors.forename: Robbe
authors.initials: R
authors.lastname: Van Beers
authors.forename: Els
authors.initials: E
authors.lastname: Herremans
authors.forename: Quang Tri
authors.initials: QT
authors.lastname: Ho
authors.forename: Pieter
authors.initials: P
authors.lastname: Verboven
authors.forename: Bart
authors.initials: B
authors.lastname: Nicolaï
authors.forename: Wouter
authors.initials: W
authors.lastname: Saeys