Lecture 15: Advanced Topics in Material Modeling (38)
gorgzhang
The Marschner model seems to create hair with substantially more detail compared to the Kajiya-Kay model. This might be because the jagged edges cause more variation. Thus the hair isn’t rendered as uniformly so there is more contrast with the lighting and shadows.
kristinechen8
It's interesting how we can use mathematical modeling to represent even very complex elements found in the real world such as hair (which one would believe to be unique/unpredictable and difficult to model), and do so with such high accuracy.
KitKasai
"Thus the hair isn’t rendered as uniformly so there is more contrast with the lighting and shadows."
I think it's more to do with the fact that an actual physical hair is made up of keratin scales, so by modeling the jagged shape of the scales you simulate the kind of reflection that happens on real hair.
The Marschner model seems to create hair with substantially more detail compared to the Kajiya-Kay model. This might be because the jagged edges cause more variation. Thus the hair isn’t rendered as uniformly so there is more contrast with the lighting and shadows.
It's interesting how we can use mathematical modeling to represent even very complex elements found in the real world such as hair (which one would believe to be unique/unpredictable and difficult to model), and do so with such high accuracy.
"Thus the hair isn’t rendered as uniformly so there is more contrast with the lighting and shadows."
I think it's more to do with the fact that an actual physical hair is made up of keratin scales, so by modeling the jagged shape of the scales you simulate the kind of reflection that happens on real hair.