I am in the process of developing a new BRTDF / BSDF as a part of my PhD
that incorporates:
1) Anisotropic
2) Stratified multilayered media with Beer-Lambert transmission
calculations.
3) Subsurface light scattering based on Stokes vector and Mueller
calculus.
4) Diffraction based on Fourier optics.
5) Monte Carlo methods
To simulate materials such as iridescent (pearlescent) paint, CD / DVD,
mother-of-pearl, pearls, opals and various other complex multilayered
surfaces. I've converted the various algorithms into a series of simple
C functions and would like to use Radiance to simulate these material
properties. However, after a quick examination of the dielectric.c file
the implementation is not going to be as easy as I'd expected especially
incorporating Monte Carlo sampling methods.
Does anyone have any advice or suggestions on how I go about
incorporating the algorithms into Radiance, and especially how I go
about incorporating Monte Carlo sampling into the BRTDF / BSDF within
Radiance?
I am in the process of developing a new BRTDF / BSDF as a part of my PhD that incorporates:
1) Anisotropic
2) Stratified multilayered media with Beer-Lambert transmission calculations.
3) Subsurface light scattering based on Stokes vector and Mueller calculus.
4) Diffraction based on Fourier optics.
5) Monte Carlo methods
To simulate materials such as iridescent (pearlescent) paint, CD / DVD, mother-of-pearl, pearls, opals and various other complex multilayered surfaces. I’ve converted the various algorithms into a series of simple C functions and would like to use Radiance to simulate these material properties. However, after a quick examination of the dielectric.c file the implementation is not going to be as easy as I’d expected especially incorporating Monte Carlo sampling methods.
Does anyone have any advice or suggestions on how I go about incorporating the algorithms into Radiance, and especially how I go about incorporating Monte Carlo sampling into the BRTDF / BSDF within Radiance?
Hi David,
cool. A new material model promises advances in material models IMHO, not only for pearls, but for very basic materials like aluminium too.
Do you plan to do validations on your new model, e.g. compare calculated results with measurements or use measured BRDF data and fit parameters of your new model to these ?
-Peter
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pab-opto, Freiburg, Germany, http://www.pab-opto.de
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