Lecture 13: Global Illumination & Path Tracing (5)
stang085
It's very interesting how the global illumination just makes everything feel so much more realistic. I feel like going through the different pictures, you can really see how much of a difference it makes when calculating the rays boucing off different surfaces can affect the image
danielhsu021202
There seems to be a lot going on in terms of making a realistic looking scene, at least many layers that go into it. How do video games / video game engines manage to run these simulations in real time and pump it out at rates of sometimes hundreds of frames per second?
AlsonC
It really interesting how global illumination and having rays bounce of each object makes the photo so much different. It's not something I think about while look around everyday, but now I find myself questioning, what if we rays didn't act predictably when I look around.
AnikethPrasad
@danielhsu021202 This is a really interesting question. It seems that calculating every individual ray would not be possible in realtime while maintaining high framerates. I wonder if there are different ways to precompute the lighting for a scene offline and use these values to render at a much faster rate.
yangbright-2001
Global illumination makes the scene and objects more natural and of course, more bright. I am also quite curious about how the simulations of light transmission work on games, maybe it would cause a lot of computational power
razvanturcu
I think that it is confusing how Global Illumination makes things so much more realistic because we don't realize how much Inter-reflections happen in the real-world. For example, the environment under the shadow of a tree during a sunny day is not pitch black like in the previous slides with hard/soft shadows. Instead it is pretty bright and you can see the things around you because light is reflected from everything around you toward the shadow. I think that another way to think about this is that when you sit under the umbrella at the beach, you still put sun screen on because you can still get burned through inter-reflections although you sit in the shadow.
It's very interesting how the global illumination just makes everything feel so much more realistic. I feel like going through the different pictures, you can really see how much of a difference it makes when calculating the rays boucing off different surfaces can affect the image
There seems to be a lot going on in terms of making a realistic looking scene, at least many layers that go into it. How do video games / video game engines manage to run these simulations in real time and pump it out at rates of sometimes hundreds of frames per second?
It really interesting how global illumination and having rays bounce of each object makes the photo so much different. It's not something I think about while look around everyday, but now I find myself questioning, what if we rays didn't act predictably when I look around.
@danielhsu021202 This is a really interesting question. It seems that calculating every individual ray would not be possible in realtime while maintaining high framerates. I wonder if there are different ways to precompute the lighting for a scene offline and use these values to render at a much faster rate.
Global illumination makes the scene and objects more natural and of course, more bright. I am also quite curious about how the simulations of light transmission work on games, maybe it would cause a lot of computational power
I think that it is confusing how Global Illumination makes things so much more realistic because we don't realize how much Inter-reflections happen in the real-world. For example, the environment under the shadow of a tree during a sunny day is not pitch black like in the previous slides with hard/soft shadows. Instead it is pretty bright and you can see the things around you because light is reflected from everything around you toward the shadow. I think that another way to think about this is that when you sit under the umbrella at the beach, you still put sun screen on because you can still get burned through inter-reflections although you sit in the shadow.