What is theta in this case? The angle between the hemisphere normal and a random vector? And is the hemisphere normal defined by the middle expression?
silentQ
@cou I think you are right about your definition of theta, but I'm not sure what you mean by the hemisphere normal being defined by the middle expression?
merc
I think I missed the explanation -- what's the purpose of a cosine-weighted sampling? Is it just importance sampling based on the assumption that things close to the horizon are less likely to hit, or something else?
kc1
I believe the most of this slide has nothing to do with cosine-weighted sampling- the title should be changed, or an explanation note provided since on its own without context it is misleading.
What is theta in this case? The angle between the hemisphere normal and a random vector? And is the hemisphere normal defined by the middle expression?
@cou I think you are right about your definition of theta, but I'm not sure what you mean by the hemisphere normal being defined by the middle expression?
I think I missed the explanation -- what's the purpose of a cosine-weighted sampling? Is it just importance sampling based on the assumption that things close to the horizon are less likely to hit, or something else?
I believe the most of this slide has nothing to do with cosine-weighted sampling- the title should be changed, or an explanation note provided since on its own without context it is misleading.