Generalization of the Lambertian model and implications for machine vision
International Journal of Computer Vision
A Reflectance Model for Computer Graphics
ACM Transactions on Graphics (TOG)
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Hi-index | 0.00 |
In this paper we consider diffuse reflectance from surfaces modelled as distributions of specular microfacets. We show how the relative contributions of specular and diffuse reflectance can be found analytically for such microfacet models using Fresnel theory. This removes the need for ad hoc specular and diffuse reflectance coefficients, ensuring the conservation of energy and only allowing physically plausible mixtures of the two components. We show how the amount of light that can be diffusely reflected is dependent on the angle of incidence and physical properties of the surface.