Dear All,

I', looking for a software that could give me the intensity of the light
re-emreged from tissue after subsurface scattering and absorption.

I can model light propagation in tissue using Monte Carlo method, but how can I
obtain intensity of emitted light over the tissue surface?

Was wondering can POV-Ray be a substitute for Monte Carlo method?
or can I obtain light intensity distribution over tissue using POV-Ray?

Any insight or guidance is appreciated.

Best regards

Post a reply to this message

Am 13.02.2015 um 04:44 schrieb vincent7643:
> Dear All,
>
> I', looking for a software that could give me the intensity of the light
> re-emreged from tissue after subsurface scattering and absorption.
>
> I can model light propagation in tissue using Monte Carlo method, but how can I
> obtain intensity of emitted light over the tissue surface?
>
> Was wondering can POV-Ray be a substitute for Monte Carlo method?
> or can I obtain light intensity distribution over tissue using POV-Ray?

That depends on whether you're looking at sufficiently homogenous 
tissue, or whether things are complicated by stuff like blood vessels, 
multiple different tissue layers, or that sort of stuff.

For homogenous tissue, POV-Ray's subsurface scattering should give a 
good approximation. It is based on the BSSRDF model suggested by Jensen 
et al. in their 2001 Siggraph paper. We're using some reparameterization 
similar to that suggested by Jensen et al. in their 2002 Siggraph paper, 
but it shouldn't be too difficult to change the code to expose the 
underlying physical parameters to the user.

For more complex tissues, you'd have to modify POV-Ray to implement a 
full monte-carlo approach for media. (At present this mechanism is only 
suited for media of low optical density.) If you want to go for that, I 
suggest using UberPOV as the basis, as it lends itself better to 
stochastic stuff than plain POV-Ray.

Post a reply to this message