Before revision: 210-218, December, 1985., scene radiance has two components: λ is the wavelength, cb is the body reflected component, cs is the surface (interface ) reflected component, mb and ms are scale factors depending on illumination, view directions and surface orientation.
After revision: (diffuse)) (specular210-218, December, 1985., scene radiance has two components: λ is the wavelength, cb is the body reflected component, cs is the surface (interface ) reflected component, mb and ms are scale factors depending on illumination, view directions and surface orientation.