Question: In the last line, where did the d come from?
The professor says that this dEi is just the Yi from the previous slide. But I'm still not sure where the d came from.
jessicajyeh
I think the d just refers to dEi being a small portion of the total irradiance. It's not its own constant, it's like the dω in the integral - a really small portion of the total.
xiaoyankang
Here's a useful explanation of Monte Carlo's estimate of direct lighting I found on StackExchange: https://computergraphics.stackexchange.com/questions/5152/progressive-path-tracing-with-explicit-light-sampling
Question: In the last line, where did the d come from?
The professor says that this dEi is just the Yi from the previous slide. But I'm still not sure where the d came from.
I think the d just refers to dEi being a small portion of the total irradiance. It's not its own constant, it's like the dω in the integral - a really small portion of the total.
Here's a useful explanation of Monte Carlo's estimate of direct lighting I found on StackExchange: https://computergraphics.stackexchange.com/questions/5152/progressive-path-tracing-with-explicit-light-sampling