[esp-r] View factors using Raytracing

[Raghuram Kalyanam]

Hi Everyone,

I have quick question about how view factors are calculated using raytracing technique. Also raytracing normally takes lot of time, but in ESP-r it seems it is quite fast. Does this raytracing technique do the Montecarlo simulations like in Radiance or is it a different kind of raytracing?

I would be great if someone could throw some light on this, or any references i can go through. 


Best Regards,
Raghu