Lecture 13: Global Illumination & Path Tracing (82)
andrewlawhh

I think that it is interesting that we seem to be getting a sort of amplifying effect here. It is visually easy to see that with each successive light bounce, the scene seems to be getting brighter and brighter, making the equation make sense visually since we are summing up the light emitted from each "bounce component."

YoungNathan

If we are using a probabilistic method for calculating light rays, won't this mean that we will get a slightly different image every time we run this algorithm, unless we used a fixed seed?

kaipinryankoh

since its an estimator yes, but it will probably be good enough that visually the discrepancies between two will still make the visualization look good

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