Lecture 13: Global Illumination & Path Tracing (84)
lwg0320
How would we go about choosing prr? Do people just use trial and error to find an optimal probability rate?
alvin-xu-5745
There is an interesting paper titled "Finding Good Termination Probability for Random-walks" that describes how certain factors play in choosing a good prr, such as the variance of the scene.
prannaypradeep999
Upon doing some brief research, I learned that a common approach to choosing p_rr is to set it proportional to the inverse of the maximum value of the function being integrated (known as the importance function). Other approaches deal with a type of heuristic, often relating to empirical observations.
How would we go about choosing prr? Do people just use trial and error to find an optimal probability rate?
There is an interesting paper titled "Finding Good Termination Probability for Random-walks" that describes how certain factors play in choosing a good prr, such as the variance of the scene.
Upon doing some brief research, I learned that a common approach to choosing p_rr is to set it proportional to the inverse of the maximum value of the function being integrated (known as the importance function). Other approaches deal with a type of heuristic, often relating to empirical observations.